Table 2.

Descriptive characteristics of time-use compositions (min/day)

	Raw composition Median (IQR)				Imputed composition Compositional mean*
							Weekday		Weekend		Weekday	Weekend
	Sleep	550	(500–610)	630	(550–690)	779.8	800.8
Physical activity	40	(0–110)	30	(0–120)	42.2	23.0
School-related	370	(0–420)	NA		135.3	NA
Hobbies	90	(20–200)	180	(60–320)	85.2	144.9
Electronic media	170	(70–290)	240	(120–390)	161.8	226.0
Domestic	180	(120–250)	200	(130–300)	235.6	245.2

Weekday, n=3485; weekend n=3468.

*Geometric mean adjusted to sum to 1440 min/day.

IQR, inter-quartile range; NA, not applicable.