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Revista Española de Salud Pública

On-line version ISSN 2173-9110Print version ISSN 1135-5727


ALVAREZ-DEL ARCO, Débora et al. Methodology and Fieldwork Logistics of a Multilevel Research Study on the Influence of Neigbourdhood's Characteristics on Natives and Ecuadorian's Mental Health in Spain. Rev. Esp. Salud Publica [online]. 2009, vol.83, n.4, pp.493-508. ISSN 2173-9110.

The methodological design, characteristics and fieldwork stage of a multilevel research study on the impact of the environmental characteristics on mental health in an autochthonous and immigrant population are described in this paper. Individual data were obtained using a core questionnaire 40 minutes length from home interviews of Spanish and Ecuadorian adults from September 2006 to January 2007. A random sample of 1186 people aged 18-55, with equal distribution of gender and nationality was obtained from Civil Registers of 33 areas (municipalities or neighbourhoods) of Madrid, Alicante, Almeria and Murcia, chosen by ethnic density and socioeconomic criteria. Previously, a pilot study was carried out. Socioeconomic indicators of neighbourhoods and selected communities were obtained from Municipal Registers and other secondary sources. Finally, 1144 people were interviewed (96%). Each person was contacted at home at two different times. The global response rate was 61%, higher among Ecuadorians (69%), who presented more problems of localisation (34%). Analyzing methods and fieldwork process the conclusion is that sample strategies for this type of population studies should be evaluated using feasibility criteria given time and money constraints, against the need to obtain representative samples of the target populations. There were serious shortcomings in the availability of social integration indicators at the neighbourhood level.

Keywords : Mental disorders; Emigrants and immigrants; Multilevel analysis; Sampling studies.

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