Objetivos: O projeto +Contigo insere-se no âmbito da promoção da saúde mental e bem-estar e da prevenção de comportamentos autolesivos e enquanto projeto de investigação longitudinal é baseado numa intervenção multinível em rede. Tem como um dos objetivos gerais promover o bem-estar em adolescentes do 3º ciclo e do ensino secundário. Métodos: Estudo de natureza quasi-experimental, com grupo de controlo, avaliado no início, no final e seis meses após intervenção ao longo do ano letivo. A intervenção dirigida aos adolescentes é composta por 7 sessões em sala de aula, abordando o estigma, a adolescência, o autoconceito, a re-solução de problemas, a depressão e o bem-estar. O instrumento de recolha de dados, aplicado sob a forma de questionário é constituído por vários instrumentos de medida entre os quais o índice de bem-estar (OMS, 1998). Foi autoadministrado a 2.105 adolescentes, de escolas da região centro de Portugal com adesão ao projeto +Contigo, durante os anos letivos de 2011/2012 e 2012/2013. Resultados: A amostra é constituída por 2.105 adolescentes, maioritariamente do género masculino, com idade entre os 13 e os 14 anos, pertencentes maioritariamente a turmas do 8º ano. O índice de bem-estar demonstra um aumento ao longo das três fases, no grupo alvo de intervenção, com diferença estatisticamente significativa para o grupo de controlo. Os adolescentes do género masculino apresentam melhores índices de bem-estar, existindo no decorrer do projeto aumento deste índice para ambos os géneros, com diferenças estatisticamente significativas no género masculino. Os adolescentes do 7º, 8º e 9º ano evoluíram favoravelmente no índice de bem-estar em todas as fases de avaliação. Conclusão: A intervenção produz resultados positivos a curto e a médio prazo para o índice de bem-estar, com resultados estatisticamente significativos para o grupo de intervenção comparativamente ao grupo de controlo. Estas repercussões ao nível do bem-estar dos adolescentes reforçam a estratégia preventiva de comportamentos suicidários adotada, já que, sendo o bem-estar um indicador de saúde mental acredita-se que poderá ajudar a prevenir os comportamentos autolesivos nos adolescentes.

Objectives: The +Contigo project aims to promote mental health and well-being and prevent self-harm behaviors. As a longitudinal research project, it is based on a multilevel network intervention. One of its major objectives is to promote well-being among 7th- to 12th-graders. Methods: This is a quasi-experimental study, with a control group assessed at the beginning and end of the intervention as well as at a 6-month follow-up during the academic year. The intervention directed at adolescents consists of 7 sessions in the classroom, addressing stigma, adolescence, self-concept, problem solving, depression, and well-being. The data collection tool (a questionnaire) is composed of several measurement instruments such as the WHO-Five Well-Being Index (WHO, 1998). The questionnaire was applied to 2,105 adolescents from schools in the central region of Portugal involved in the +Contigo project during the academic years of 2011/2012 and 2012/2013. Results: The sample comprised 2,105 adolescents. Most students were male, 8th-graders, and aged between 13 and 14 years. Throughout the 3 stages, the well-being index increased more in the intervention group than in the control group, with a statistically significant difference. Male adolescents had higher well-being scores. Throughout this project, well-being increased for both genders, with statistically significant differences in the male gender. Students in the 7th, 8th, and 9th grades improved their well-being in all assessment stages. Conclusion: The intervention led to short- and long-term positive results in the well-being index, with statistically significant results for the intervention group when compared to the control group. This impact on the adolescents’ well-being reinforces the strategy adopted to prevent suicidal behaviors, since it is believed that well-being, as a mental health indicator, can help prevent adolescents’ self-harm behaviors.

Keywords Well-being, Adolescents, Suicide, Self-harm behaviors, Suicide prevention, School setting

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