• Sebastián Sanz-Martos, Isabel M López-Medina, Cristina Álvarez-García, and Carmen Álvarez-Nieto.
• Grupo de investigación Psicología Comparada: Aprendizaje, Atención y Memoria, Universidad de Jaén, Jaén, España. Electronic address: ssm00026@red.ujaen.es.
• Aten Primaria. 2019 Aug 1; 51 (7): 424-434.

ObjectiveTo assess the effectiveness of the interventions to prevent a pregnancy in adolescence.DesignSystematic review.Data SourcesThe following databases were consulted: PubMed, CINAHL, Scopus, Cuiden Plus, LILACS, and IME, in order to identify interventions aimed at preventing a pregnancy in adolescence.Study SelectionA total of 24 primary investigations, in which an educational program to prevent a pregnancy in the adolescence was evaluated, were selected. The quality of the selected studies was assessed according to the CASPe scale.ResultsEducational programs for the modification of the teenage pregnancy rate show inconclusive results, as there are 2 studies that find a reduction, and 2 that find that there are no significant changes. For secondary outcomes, it was found that educational programs are effective for increasing the knowledge level about sexuality and contraceptive methods and changing attitudes about the risk of a teenage pregnancy or the use of contraceptive methods. There are no statistically significant differences between the studies with a positive and negative outcome (P>.05) for any of the results analysed in this review.ConclusionThere is no a single intervention modality that is the most effective for prevention of a teenage pregnancy. More research is needed with a longitudinal approach that assess not only intermediate results, but also a modification in the pregnancy rate.Copyright © 2018 The Authors. Publicado por Elsevier España, S.L.U. All rights reserved.

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