Longitudinal co-trajectories of depression and alcohol problems in adults during the COVID-19 pandemic.

Unlabelled: We examined person-centered heterogeneity in the longitudinal co-development of depression and alcohol problems during the COVID-19 outbreak. We also investigated the risk factors (personality and coping) for being in "higher" relative to "lower" risk subgroups of combined depressive symptoms and alcohol problems. Canadian participants ( = 364,  = 32.16, 54.67% male) completed questionnaires four times every three months, starting approximately 2 months after Canada announced its COVID-19 State-of-Emergency. Parallel-process latent class growth analysis found evidence for three latent subgroups: a "moderate increasing depression and alcohol problems" subgroup (Class 1); a "moderate stable depression, moderate decreasing alcohol problems" subgroup (Class 2); and a "low-risk normative" subgroup (with mild depression that was stable and mild alcohol problems that decreased; Class 3). Multinomial logistic regressions found that higher levels of hopelessness, impulsivity, and boredom proneness distinguished Class 1 from Class 3. Further, lower levels of general self-efficacy distinguished Class 1 from Classes 2 and 3. Linear mixed models found that Class 1 increasingly used maladaptive avoidant coping strategies (denial, drugs/alcohol, behavioural disengagement) as the pandemic progressed, whereas Class 2 increasingly used adaptive approach-oriented strategies (planning, seeking emotional support from others). We analyzed longitudinal data to detect classes of individuals with depressive and alcohol-related difficulties during COVID-19 and to characterize the vulnerability factors for increased difficulties. Highlighting the heterogeneity in the co-trajectory of depression and alcohol problems during COVID-19 and the personality and coping factors associated with combined increases in these mental health difficulties can inform treatment practices and bolster peoples' preparedness and resilience for future pandemics.

Supplementary Information: The online version contains supplementary material available at 10.1007/s12144-022-04109-4.