Symptom centrality and infrequency of endorsement identify adolescent depression symptoms more strongly associated with life satisfaction

• Published in: Journal of affective disorders 2021-06, Vol.289, p.90-97
• Main Authors: Mullarkey, Michael C., Marchetti, Igor, Bluth, Karen, Carlson, Caryn L., Shumake, Jason, Beevers, Christopher G.
• Format: Article
• Language: English
• Subjects: adolescent depression; life satisfaction; network analysis; symptom-level
• ISSN: 0165-0327; 1573-2517
• DOI: 10.1016/j.jad.2021.02.064

•All adolescent depression symptoms aren't equally related to life satisfaction•Individual symptoms shared between 2.9% and 12.6% variance with life satisfaction•Sadness shared the most variance and feeling restless shared the least•Strength centrality and infrequency of endorsement can identify important symptoms Although depression symptoms are often treated as interchangeable, some symptoms may relate to adolescent life satisfaction more strongly than others. To assess this premise, we first conducted a network analysis on the Mood and Feelings Questionnaire (MFQ) in a large (N = 1,059), cross-sectional sample of community adolescents (age M = 14.72 ± 1.79). The most central symptoms of adolescent depression, as indexed by strength, were self-hatred, loneliness, sadness, and worthlessness while the least frequently endorsed symptoms were self-hatred, anhedonia, feeling like a bad person, and feeling unloved. Moreover, the more central a depression symptom was in the network (i.e., higher strength), the more variance it shared with life satisfaction (r = 0.59, 95% CI: 0.27, 0.76). How frequently a symptom was endorsed was negatively associated with the variance symptoms shared with life satisfaction (r = -0.48, 95% CI: -0.63, -0.21). Cross-validated, prediction focused models found central symptoms were expected to predict more out of fold variance in life satisfaction than peripheral symptoms and frequently endorsed symptoms, but not the least frequently endorsed symptoms. These findings show certain depression symptoms may be more strongly associated with life satisfaction in adolescence and these symptoms can be identified by multiple symptom-level metrics. Limitations include use of cross-sectional data and utilizing a community sample. Better understanding which symptoms of depression share more variance with important outcomes like life satisfaction could help us develop a more fine-grained understanding of adolescent depression.