Trends in Psychological Symptoms among Canadian Adolescents from 2002 to 2014: Gender and Socioeconomic Differences

Objective: To describe trends in psychological health symptoms in Canadian youth from 2002 to 2014 and examine gender and socioeconomic differences in these trends. Method: We used data from the Canadian Health Behaviour in School-aged Children (HBSC) study. We assessed psychological symptoms from a validated symptom checklist and calculated a symptom score (range, 0-16). We stratified our analyses by gender and affluence tertile based on an index of material assets. We then plotted trends in symptom score and calculated the probability of experiencing specific symptoms over time. Results: Between 2002 and 2014, psychological symptom score increased by 1.01 (95% confidence interval [CI], 0.73 to 1.41), 1.08 (95% CI, 0.79 to 1.37), and 0.84 (95% CI, 0.55 to 1.13) points in girls in the low-, middle-, and high-affluence tertiles, respectively. In boys, psychological symptoms decreased by –0.39 (95% CI, –0.66 to –0.12) and –0.12 (95% CI, –0.43 to 0.19) points in the high- and middle-affluence tertiles, respectively, and increased by 0.30 (95% CI, –0.04 to 0.63) points in the low-affluence tertile. The probability of feeling anxious and having sleep problems at least once a week notably increased in girls from all affluence groups, while the probability of feeling depressed and irritable decreased among boys from the high-affluence tertile. Conclusion: Psychological symptoms increased in Canadian adolescent girls across all affluence groups while they remained stable in boys from low and middle affluence and decreased in boys from high affluence. Specific psychological symptoms followed distinct trends. Further research is needed to uncover the mechanisms driving these trends.