<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1134-928X</journal-id>
<journal-title><![CDATA[Gerokomos]]></journal-title>
<abbrev-journal-title><![CDATA[Gerokomos]]></abbrev-journal-title>
<issn>1134-928X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Española de Enfermería Geriátrica y Gerontológica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1134-928X2022000200003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Fragilidad y riesgo de dependencia: el cuestionario de Barber en estudios poblacionales]]></article-title>
<article-title xml:lang="en"><![CDATA[Frailty and risk of dependency: Barber's questionnaire in population based studies]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pedrero-Pérez]]></surname>
<given-names><![CDATA[Eduardo J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales-Alonso]]></surname>
<given-names><![CDATA[Sara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Rives]]></surname>
<given-names><![CDATA[Ester]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valero-Oteo]]></surname>
<given-names><![CDATA[Irene]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez-Crespo]]></surname>
<given-names><![CDATA[Blanca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Olalla]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Benítez-Robredo]]></surname>
<given-names><![CDATA[María Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ayuntamiento de Madrid Madrid Salud Departamento de Evaluación y Calidad]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Ayuntamiento de Madrid Madrid Salud Departamento de Evaluación y Calidad]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Ayuntamiento de Madrid Madrid Salud Departamento de Evaluación y Calidad]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Ayuntamiento de Madrid Madrid Salud Departamento de Evaluación y Calidad]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Ayuntamiento de Madrid Madrid Salud Departamento de Evaluación y Calidad]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>33</volume>
<numero>2</numero>
<fpage>76</fpage>
<lpage>81</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1134-928X2022000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1134-928X2022000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1134-928X2022000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: La dependencia funcional es un problema creciente, vinculado al incremento de edad, especialmente en países industrializados. Los estudios poblacionales permiten un acercamiento a la magnitud del problema.  Objetivo: El cuestionario de Barber es un instrumento ampliamente utilizado para la detección de riesgo de dependencia, vulnerabilidad o fragilidad en adultos mayores. No se han encontrado trabajos que lo apliquen en estudios poblacionales, en los que, por su sencillez, podría resultar útil.  Metodología: Se incluyó el cuestionario en una encuesta de salud, con una muestra representativa (n = 1.882 sujetos) de personas de 65 años o más, de una gran ciudad (Madrid, España) y se presentan las evidencias de validez basada en la estructura interna y la relación con otras variables de tipo convergente y discriminante.  Resultados: Se obtuvo una solución unifactorial, con adecuada consistencia interna según varios indicadores multivariados. Se encontraron diferencias significativas por sexo, tanto al nivel de la escala como de los ítems. También aparecieron correlaciones significativas entre la puntuación total de la prueba y la de otras variables, como la calidad de vida relacionada con la salud, la edad y la sensación de soledad. Un 58,1% de la muestra obtuvo puntuaciones que sugieren vulnerabilidad (el 65,3% de las mujeres).  Conclusiones: Los resultados sugieren la utilidad del cuestionario de Barber, como prueba fiable y válida, para detectar situaciones de fragilidad o vulnerabilidad en adultos mayores, lo que facilitaría la comparabilidad entre encuestas poblacionales, superando la actual tendencia a incluir decenas de preguntas en otras encuestas de índole regional o nacional.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Functional dependence is a growing problem, linked to increasing age, especially in industrialized countries. Population studies allow an approach to the magnitude of the problem.  Objectives: Barber's questionnaire is a widely used instrument for the detection of risk of dependence, vulnerability or frailty in older adults. No works have been found that apply it in population-based studies, where, due to its simplicity, it could be useful.  Methodology: The questionnaire was included in a Health Survey, with a representative sample (n = 1,882 subjects) of people aged 65 years or more, from a big city (Madrid, Spain) and the evidence of validity is presented based on the internal structure and the relationship with other variables of convergent and discriminant type.  Results: A unifactorial solution was obtained, with adequate internal consistency according to several multivariate indicators. Significant differences were found by sex, both at the scale and item level. Significant correlations also appeared between the total test score and other variables, such as health-related quality of life, age, and sense of loneliness. A total of 58.1% of the sample obtained scores suggesting vulnerability (65.3% of the women).  Conclusions: The results suggest the usefulness of the Barber questionnaire, as a reliable and valid test, to detect situations of frailty or vulnerability in older adults, which would facilitate comparability between population surveys, overcoming the current tendency to include dozens of questions in other regional or national surveys.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Adultos mayores]]></kwd>
<kwd lng="es"><![CDATA[fragilidad]]></kwd>
<kwd lng="es"><![CDATA[riesgo de dependencia]]></kwd>
<kwd lng="es"><![CDATA[estudios poblacionales]]></kwd>
<kwd lng="es"><![CDATA[diferencias de género]]></kwd>
<kwd lng="en"><![CDATA[Older adults]]></kwd>
<kwd lng="en"><![CDATA[frailty]]></kwd>
<kwd lng="en"><![CDATA[dependency risk]]></kwd>
<kwd lng="en"><![CDATA[population studies]]></kwd>
<kwd lng="en"><![CDATA[gender differences]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<collab>Instituto Nacional de Estadística</collab>
<article-title xml:lang=""><![CDATA[Avance de la Estadística del Padrón Continuo a 1 de enero de 2019. Datos provisionales]]></article-title>
<source><![CDATA[INE]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Islas-Granillo]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Medina-Solís]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
<name>
<surname><![CDATA[Márquez-Corona]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<name>
<surname><![CDATA[Rosa-Santillana]]></surname>
<given-names><![CDATA[R de la]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Barrera]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Villalobos-Rodelo]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence of multimorbidity in subjects aged =60 years in a developing country]]></article-title>
<source><![CDATA[Clin Interv Aging]]></source>
<year>2018</year>
<volume>13</volume>
<page-range>1129-33</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodgers]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A comparative analysis of ADL questions in surveys of older people]]></article-title>
<source><![CDATA[J Gerontol B Psychol Sci Soc Sci]]></source>
<year>1997</year>
<volume>52</volume>
<numero>Spec No</numero>
<issue>Spec No</issue>
<page-range>21-36</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<collab>IMSERSO</collab>
<source><![CDATA[Vejez y protección social a la dependencia en Europa]]></source>
<year>2001</year>
<publisher-loc><![CDATA[Madrid ]]></publisher-loc>
<publisher-name><![CDATA[Ministerio de Trabajo y Asuntos Sociales, Instituto de Migraciones y Servicios Sociales. IMSERSO]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abellán García]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ramiro Fariñas]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez Díaz]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Aceituno Nieto]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Ayala García]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Pujol Rodríguez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Un perfil de las personas mayores en España 2019. Indicadores estadísticos básicos]]></article-title>
<source><![CDATA[Informes Envejecimiento en Red]]></source>
<year>2019</year>
<numero>22</numero>
<issue>22</issue>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Álvarez-Hernández]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Delgado-de la Mora]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diseño de estudios epidemiológicos. I. El estudio transversal: tomando una fotografía de la salud y la enfermedad]]></article-title>
<source><![CDATA[Boletín Clínico Hospital Infantil del Estado de Sonora]]></source>
<year>2015</year>
<volume>32</volume>
<page-range>26-34</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hernández-Ávila]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Garrido]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Salazar-Martínez]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sesgos en estudios epidemiológicos]]></article-title>
<source><![CDATA[Salud Pública de México]]></source>
<year>2000</year>
<volume>42</volume>
<page-range>438-46</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<collab>Gobierno de España. Ministerio de Sanidad</collab>
<article-title xml:lang=""><![CDATA[Encuesta Nacional de Salud de España 2017]]></article-title>
<source><![CDATA[Ministerio de Sanidad]]></source>
<year>2018</year>
<publisher-loc><![CDATA[Madrid ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Katz]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Ford]]></surname>
<given-names><![CDATA[AB]]></given-names>
</name>
<name>
<surname><![CDATA[Moskowitz]]></surname>
<given-names><![CDATA[RW]]></given-names>
</name>
<name>
<surname><![CDATA[Jackson]]></surname>
<given-names><![CDATA[BA]]></given-names>
</name>
<name>
<surname><![CDATA[Jaffe]]></surname>
<given-names><![CDATA[MW]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Studies of illness in the aged: the index of ADL: a standardized measure of biological and psychosocial function]]></article-title>
<source><![CDATA[JAMA]]></source>
<year>1963</year>
<volume>185</volume>
<page-range>914-9</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lawton]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
<name>
<surname><![CDATA[Brody]]></surname>
<given-names><![CDATA[EM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of older people: Selfmaintaining and instrumental activities of daily living]]></article-title>
<source><![CDATA[Gerontologist]]></source>
<year>1969</year>
<volume>9</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>179-86</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Edjolo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Proust-Lima]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Delva]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Dartigues]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Pérès]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Natural history of dependency in the elderly: a 24-year population-based study using a longitudinal item response theory model]]></article-title>
<source><![CDATA[Am J Epidem]]></source>
<year>2016</year>
<volume>183</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>277-85</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pialoux]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Goyard]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Lesourd]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Screening tools for frailty in primary health care: A systematic review]]></article-title>
<source><![CDATA[Geriatr Gerontol Int]]></source>
<year>2012</year>
<volume>12</volume>
<page-range>189-97</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barber]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geriatric screening]]></article-title>
<source><![CDATA[J R Coll Gen Pract]]></source>
<year>1981</year>
<volume>31</volume>
<page-range>57</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barber]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
<name>
<surname><![CDATA[Wallis]]></surname>
<given-names><![CDATA[JB]]></given-names>
</name>
<name>
<surname><![CDATA[McKeating]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A postal screening questionnaire in preventive geriatric care]]></article-title>
<source><![CDATA[J R Coll Gen Pract]]></source>
<year>1980</year>
<volume>30</volume>
<page-range>49-51</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Molina-Garrido]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Guillen-Ponce]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparison of two frailty screening tools in older women with early breast cancer]]></article-title>
<source><![CDATA[Crit Rev Oncol Hematol]]></source>
<year>2011</year>
<volume>79</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>51-64</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rojas]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Pablo]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
<name>
<surname><![CDATA[Herrera]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[Carrasco]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bartolotti]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Galindo]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Are the diagnostic tools of ECOG, VES-13 and scales of frailty of Balducci and Rockwood useful to investigate the vulnerability in the older people with cancer?]]></article-title>
<source><![CDATA[J Geriatr Oncol]]></source>
<year>2013</year>
<volume>4</volume>
<numero>S1</numero>
<issue>S1</issue>
<page-range>S85-6</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[González-Moneo]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-Benavides]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Verdu-Rotellar]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Cladellas]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bruguera]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Qiñones-Ubeda]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ischemic aetiology, self-reported frailty, and gender with respect to cognitive impairment in chronic heart failure patients]]></article-title>
<source><![CDATA[BMC Cardiovasc Disord]]></source>
<year>2016</year>
<volume>16</volume>
<numero>1</numero>
<issue>1</issue>
</nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Parks]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Lakshmanan]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Winterbottom]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Morgan]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
<name>
<surname><![CDATA[Cox]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Cheung]]></surname>
<given-names><![CDATA[KL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comprehensive geriatric assessment for older women with early breast cancer-a systematic review of literature]]></article-title>
<source><![CDATA[World J Surg Oncol]]></source>
<year>2012</year>
<volume>10</volume>
</nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Romera]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Orfila]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Segura]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Ramirez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Möller]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Fabra]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effectiveness of a primary care based multifactorial intervention to improve frailty parameters in the elderly a randomised clinical trial: rationale and study design]]></article-title>
<source><![CDATA[BMC Geriatr]]></source>
<year>2014</year>
<volume>14</volume>
</nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martín-Lesende]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez-Andrés]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Utilidad del cuestionario de Barber para seleccionar a personas de 75 años o más con riesgo de hospitalización, institucionalización o muerte]]></article-title>
<source><![CDATA[Rev Esp Geriatr Gerontol]]></source>
<year>2005</year>
<volume>40</volume>
<page-range>335-44</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Larizgoitia]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Larizgoitia]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Adaptación en nuestro medio de una encuesta para la detección de ancianos con riesgo de dependencia]]></article-title>
<source><![CDATA[Revista Multidisciplinar de Gerontología]]></source>
<year>1996</year>
<volume>6</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>224-31</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nelson]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Wasson]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Kirk]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Keller]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Clark]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Dietrich]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of function in routine clinical practice: description of the COOP chart method and preliminary findings]]></article-title>
<source><![CDATA[J Clin Epidemiol]]></source>
<year>1987</year>
<volume>40</volume>
<numero>S1</numero>
<issue>S1</issue>
<page-range>55S-63S</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[López Alonso]]></surname>
<given-names><![CDATA[SR]]></given-names>
</name>
<name>
<surname><![CDATA[Navarro Casado]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[González Rojo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez Sánchez]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Romero Cañadillas]]></surname>
<given-names><![CDATA[AB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Validity, reliability and convergence of COOP/WONCA and EUROQoL, via telephone, on people suffering from hip and knee osteoarthritis]]></article-title>
<source><![CDATA[Index de Enfermería]]></source>
<year>2009</year>
<volume>18</volume>
<page-range>195-200</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pedrero-Pérez]]></surname>
<given-names><![CDATA[EJ]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz-Olalla]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[COOP/WONCA: Reliability and validity of the test administered by telephone]]></article-title>
<source><![CDATA[Aten Primaria]]></source>
<year>2016</year>
<volume>48</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>25-32</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Serrano-Gallardo]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Lizán-Tudela]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz-Olalla]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Otero]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reference population values of the Spanish version of the COOP/ WONCA charts of quality of life in an urban adult population]]></article-title>
<source><![CDATA[Med Clin (Barc)]]></source>
<year>2009</year>
<volume>132</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>336-43</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rocha]]></surname>
<given-names><![CDATA[KB]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez-Sanz]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Borrell]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Obiols]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Psychometric properties and normative values of the General Health Questionnaire (GHQ-12) in general Spanish population]]></article-title>
<source><![CDATA[Int J Clin Health Psychol]]></source>
<year>2011</year>
<volume>11</volume>
<page-range>125-39</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Makowska]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Merecz]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Moscicka]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kolasa]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The validity of general health questionnaires, GHQ-12 and GHQ-28, in mental health studies of working people]]></article-title>
<source><![CDATA[Int J Occup Med Environ Health]]></source>
<year>2002</year>
<volume>15</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>353-62</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Montejo-Carrasco]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Montenegro-Peña]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Prada Crespo]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[García Mulero]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[García Marín]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Pedrero Pérez]]></surname>
<given-names><![CDATA[EJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Quejas de memoria: salud mental, enfermedades, dolor y soledad. Estudio poblacional en la ciudad de Madrid]]></article-title>
<source><![CDATA[Rev Neurol]]></source>
<year>2019</year>
<volume>69</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>481-91</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Díaz Olalla]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Benítez Robredo]]></surname>
<given-names><![CDATA[MT]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez Pérez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Sanz Cuesta]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
</person-group>
<source><![CDATA[Estudio de Salud de la Ciudad de Madrid 2018]]></source>
<year>2020</year>
<publisher-loc><![CDATA[Madrid ]]></publisher-loc>
<publisher-name><![CDATA[Madrid Salud]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kelly]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Computer-assisted telephone interviewing (CATI)]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Lavrakas]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
</person-group>
<source><![CDATA[Encyclopedia of Survey Research Methods]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Thousand Oaks, CA, UA ]]></publisher-loc>
<publisher-name><![CDATA[Sage Publications]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Díaz-Olalla]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Benítez-Robredo]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<source><![CDATA[Estudio de Salud de la Ciudad de Madrid 2014]]></source>
<year>2015</year>
<publisher-loc><![CDATA[Madrid ]]></publisher-loc>
<publisher-name><![CDATA[Madrid Salud]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B32">
<label>32</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Domingo-Salvany]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Bacigalupe]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Carrasco]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Espelt]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ferrando]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Borrell]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Proposals for social class classification based on the Spanish National Classification of Occupations 2011 using neo-Weberian and neo-Marxist approaches]]></article-title>
<source><![CDATA[Gac Sanit]]></source>
<year>2013</year>
<volume>27</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>263-72</page-range></nlm-citation>
</ref>
<ref id="B33">
<label>33</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hancock]]></surname>
<given-names><![CDATA[GR]]></given-names>
</name>
<name>
<surname><![CDATA[Mueller]]></surname>
<given-names><![CDATA[RO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Rethinking construct reliability within latent variable systems]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Cudek]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[duToit]]></surname>
<given-names><![CDATA[SHC]]></given-names>
</name>
<name>
<surname><![CDATA[Sorbom]]></surname>
<given-names><![CDATA[DF]]></given-names>
</name>
</person-group>
<source><![CDATA[Structural equation modeling: Present and future]]></source>
<year>2000</year>
<page-range>195-216</page-range><publisher-loc><![CDATA[Lincolnwood, IL ]]></publisher-loc>
<publisher-name><![CDATA[Scientific Software]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B34">
<label>34</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McNeish]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Thanks coefficient alpha, we'll take it from here]]></article-title>
<source><![CDATA[Psychol Methods]]></source>
<year>2018</year>
<volume>23</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>412-33</page-range></nlm-citation>
</ref>
<ref id="B35">
<label>35</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peters]]></surname>
<given-names><![CDATA[G-JY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The alpha and the omega of scale reliability and validity: Why and how to abandon Cronbach's alpha and the route towards more comprehensive assessment of scale quality]]></article-title>
<source><![CDATA[European Health Psychologist]]></source>
<year>2014</year>
<volume>16</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>56-69</page-range></nlm-citation>
</ref>
<ref id="B36">
<label>36</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cohen]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Statistical power analysis for the behavioral sciences]]></source>
<year>1988</year>
<edition>2nd</edition>
<publisher-loc><![CDATA[Hillsdale, NJ ]]></publisher-loc>
<publisher-name><![CDATA[Erlbaum]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B37">
<label>37</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lorenzo-Seva]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<name>
<surname><![CDATA[Ferrando]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[FACTOR A computer program to fit the exploratory factor analysis model]]></article-title>
<source><![CDATA[Behav Res Methods]]></source>
<year>2006</year>
<volume>38</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>88-91</page-range></nlm-citation>
</ref>
<ref id="B38">
<label>38</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hay]]></surname>
<given-names><![CDATA[SI]]></given-names>
</name>
<name>
<surname><![CDATA[Abajobir]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Abate]]></surname>
<given-names><![CDATA[KH]]></given-names>
</name>
<name>
<surname><![CDATA[Abbafati]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Abbas]]></surname>
<given-names><![CDATA[KM]]></given-names>
</name>
<name>
<surname><![CDATA[Abd-Allah]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Global, regional, and national disability-adjusted life-years (DALYs) for 333 diseases and injuries and healthy life expectancy (HALE) for 195 countries and territories, 1990-2016: A systematic analysis for the Global Burden of Disease Study 2016]]></article-title>
<source><![CDATA[Lancet]]></source>
<year>2017</year>
<volume>390</volume>
<numero>10100</numero>
<issue>10100</issue>
<page-range>1260-344</page-range></nlm-citation>
</ref>
<ref id="B39">
<label>39</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[García-Continente]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-Giménez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Nebot]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Potencial sesgo de selección en las encuestas telefónicas: teléfonos fijos y móviles]]></article-title>
<source><![CDATA[Gac Sanit]]></source>
<year>2014</year>
<volume>28</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>170-2</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
