an overall trendp < 0.001
All three datasets included both younger and older students, though there were fewer students in the youngest age-group in the 2014 survey compared to the 2010 and 2018 surveys. Trends in HSCL-25 score across survey years Overall, an increase in self-reported psychological distress was observed between each time point from 2010 to 2018 (treating time as a categorical variable) and as an overall trend (treating time as continuous variable) (all p < 0.001).