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Revista Española de Salud Pública

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


YAGO SIMON, Teresa  and  TOMAS AZNAR, Concepción. Sociodemographic and Clinical Data Predicting Unplanned Pregnancy in Young 13 to 24 Years, Spain. Rev. Esp. Salud Publica [online]. 2014, vol.88, n.3, pp.395-406. ISSN 2173-9110.

Background: Unplanned pregnancy (UP) is still a public health problem. This study aims at finding out the sexual behaviours and contraceptive practices related to UP in young women. Methods: 583 women between the ages of 13 and 24 years old were assisted in the contraception office in 2012. Dependent variable: UP. Independent variables: sociodemographic, sexual behaviours and contraceptive practices. Bivariate analysis, chi-squared and Student's t tests. Multivariate analysis, binary logistic regression. Results: 174 (29.8%) young girls had had a UP. The risk of UP increased in immigrant women (OR 2.858 [CI 95% 1.808-4.519]), in less educated young women (OR 2.343 [CI 95% 1.361-4.035]), in those who did not use a safe contraceptive method in their first coitus (OR 3.043 [CI 95% 1.900-4.875]), in those who stated problems with the use of methods (OR 2.092 [CI 95% 1.267-3.454]) and in those who attend irregularly the consultation (OR 2.063 [CI 95% 1.275-3.339]). There is no relationship with age (teenagers/young). The model is considered acceptable: Hosmer-Lemeshow is not significant and its discrimination power is at 77%. Conclusion: Predictors of unplanned pregnancy in young women are: immigrant women, less educated young women, not using use a safe contraceptive method in their first coitus, stated problems with the use of methods and attend the consultation irregularly.

Keywords : Unplanned pregnancy; Teenagers; Young; Prevention; Contraceptive.

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