Aims: The study aimed to examine the association between adolescent friendships (ages 15 and 18 years) and self-rated health in early adulthood (age 29 years).
Methods: The study population consisted of participants from the West Jutland cohort study who reported on their close friendships at ages 15 and 18 years, and self-rated health at age 29 years. The presence of at least one close friend and self-rated health were assessed through questionnaires, and self-rated health was dichotomized as either high or low. Logistic regression analyses were adjusted for sex, family functioning, income, and parental education.
Results: Findings indicate that 89% of participants at age 15 years and 92% at age 18 years reported having close friends. The presence of close friendships at age 15 was significantly associated with higher self-rated health at age 29 years (odds ratio 1.9, 95% confidence interval 1.1-3.2). However, the association for friendships at age 18 years was not statistically significant. Experiencing close friendships at both ages 15 and 18 years showed a tendency toward an associated with self-rated health, but the association was not statistically significant (2.0, 95% confidence interval 0.6-6.6). Sensitivity analysis revealed that altering the self-rated health threshold weakened associations.
Conclusions: