Table 2.

Original impact evaluation overview.

Target group and sample size	651, 1330 and 662 adolescents in respectively Bolivia, Ecuador and Nicaragua
Design and Method	Intervention and control group, two cross-sectional surveys (pre/post) that were later on matched
Data collection tools	Questionnaires with closed and open ended questions, largely based on previously validated questions and scales, and pilot tested. The questionnaire contained 59 questions on socio-demographic characteristics, relationships, communication skills, information-seeking behaviour, use of existing SRH services, reproductive history and sexual behaviour
Statistical methods	Descriptive, logistic multivariate regression, generalized estimating equations
Indicators	In order to measure the effect of the interventions on adolescents SRH two outcome indicators (communication on sex, use and knowledge of health services) and one impact indicator (condom use) were chosen
Main findings	In Ecuador, it found slight improvement in condom use and improved knowledge and use of health care services in the intervention group compared to the control group, while positive changes in communication on SRH topics were reported in Bolivia. No significant changes were found in Nicaragua
Limitations	High lost to follow up – 70% between waves, differences in baseline characteristics between cohorts, inconstant participation, the divergence in the applied interventions (consequence of the use of action research as methodology)