Purpose: To investigate whether life satisfaction and optimism might reduce the risk of suicidal thoughts and behaviors among adolescents with depressive symptoms.
Methods: Participants were 1,904 youth from the NEXT Generation Health Study, a national sample of U.S. adolescents, followed over 7 years from 2009/2010 to 2015/2016. Longitudinal latent profile analysis and logistic regressions were conducted.
Results: We identified three subgroups of adolescents with different patterns of depressive symptoms across the first six waves: "Low" (40%), "Mild" (42%), and "Moderate to Severe" (18%). The Moderate to Severe (OR = 14.47, 95% CI [6.61, 31.66]) and Mild (OR = 3.90, 95% CI [2.22, 6.86]) depression profiles had significantly higher odds of developing suicidality than the Low depression profile. Both life satisfaction and optimism moderated the association between depressive symptom profile and suicidality. The difference in suicidality risk between the Mild and Low depression profiles was significantly attenuated at high versus low levels of life satisfaction, with a difference of -.08, 95% CI [-.14, -.03]. In addition, the difference in suicidality risk between the Moderate to Severe and Low depression profiles was attenuated at high versus low levels of optimism, with a difference of -.11, 95% CI [-.21, -.01].
Conclusions: For adolescents transitioning to young adulthood, resilience factors such as life satisfaction and optimism may buffer against suicidality risk in the face of mild or moderate to severe depressive symptoms.
Trial registration: ClinicalTrials.gov NCT01031160.
Keywords: Depression; Life satisfaction; Optimism; Resilience factor; Risk factor; Suicidal ideation; Suicide attempt; Suicide plan.
Published by Elsevier Inc.