Table 2.

Comparison of characteristics of secondary school student participants recruited pre- and during COVID.

Demographics	Pre-COVID (n = 230)	COVID (n = 212)	P
Age, years, mean (SD)	13.9 (1.8)	14.3 (1.7)	.045
Female, n (%)	111 (48%)	82 (39%)	.042
Government-subsidized school, n (%)	230 (100%)	212 (100%)	1
Low-income household*, n (%)	58 (25.2%)	80 (37.7%)	.005
Season at the time of assessment:			< .001
Spring (Mar–Apr), n (%)	0 (0%)	40 (18.9%)
Summer (May–Sept), n (%)	64 (27.8%)	44 (20.8%)
Autumn (Oct–Nov), n (%)	88 (41.5%)	19 (9.0%)
Winter (Dec–Feb), n (%)	78 (33.9%)	109 (36.3%)
Any mental disorder, n (%)	83 (36.1%)	73 (51.4%)	.72
Digital leisure time, hours per week, median	64.0	71.4	.043

SD = standard deviation.