Table 9.

The 2-way analysis of variance test to compare season and weekdays’ impact on sleep time, sleep duration, wake-up time, and time spent at home.

		Sum of squares	df	F test	P value
Sleep time
	C(wday)a	1,639,363	6	32.18	<.001
	C(season)	136,515.4	3	5.36	.001
	Residual	112,487,100	13,247.0
Wake-up time
	C(wday)	5,786,750.05	6	134.32	<.001
	C(season)	379,805.86	3	17.63	<.001
	Residual	95,119,438.37	13,247.0
Sleep duration
	C(wday)	394.48	6	22.47	<.001
	C(season)	135.76	3	15.47	<.001
	Residual	38.752.79	13,247.0
Time spent home
	C(wday)	9,840,000	6	38.08	<.001
	C(season)	4,550,000	3	35.19	<.001
	Residual	571,000,000	13,247.0

^awday: weekday.