Trajectories of maternal depressive symptoms in the early childhood period and family-wide clustering of risk.
Previous research on individual differences in the course of maternal depressive symptoms has yielded inconsistent findings, with significant variation in the number and pattern of trajectories identified. In addition, missing from the literature is a comprehensive examination of predictors and longitudinal consequences of particular depression trajectories.



Participants in this study included a community cohort of 501 women assessed for depression using the Center for Epidemiologic Depression Scale at infant age 2, 18, 36, and 54 months. A multi-informant approach was used to examine predictors and outcomes of trajectory membership.



Using growth mixture modeling, three distinct trajectories emerged: 84% of the sample demonstrated low-stable levels of depressive symptoms, 9.5% had high-decreasing scores, and 6.5% had moderate-increasing scores. While socioeconomic status and marital conflict differentiated the low-stable group from the high-decreasing and moderate-increasing group, neighborhood collective efficacy differentiated the latter two groups. At 54 months, a clustering of family risks was prevalent for the moderate-increasing depression group, including higher marital conflict and household chaos, lower parental positivity, and heightened levels of child psychopathology.



Limitations include reliance on self-reports to assess maternal depression and the relatively small sample size of certain trajectory classes.



The onset and course of maternal depression in the early childrearing period is heterogeneous, with distinct subgroups in the population. Comprehensive assessment of individual, family, and neighborhood stressors augments our understanding of the predictors and consequences of trajectory membership over this critical period of child and family adaptation.
Department of Psychology, University of Calgary, Calgary, Canada; Alberta Children's Hospital Research Institute, Calgary, Canada. Electronic address: sheri.madigan@ucalgary.ca.
Sheri
S
Madigan
Department of Applied Psychology and Human Development, University of Toronto, Toronto, Canada.
Mark
M
Wade
Département des fondements et pratiques en éducation, Université Laval, Quebec City, Canada.
André
A
Plamondon
Department of Applied Psychology and Human Development, University of Toronto, Toronto, Canada. Electronic address: jenny.jenkins@utoronto.ca.
Jennifer M
JM
Jenkins
D000328:Adult; D002675:Child, Preschool; D003863:Depression / Q000453:epidemiology*; D054541:Family Conflict; D005220:Fathers; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D009035:Mothers / Q000523:psychology*; D011247:Pregnancy; D011248:Pregnancy Complications; D011569:Psychiatric Status Rating Scales; D012307:Risk Factors; D012923:Social Class
Family-wide risk; Growth mixture modeling; Maternal depressive symptoms