Table 3.

Results from linear mixed effects models predicting parameters

	Weekday DRP length as categorical variable						Weekday DRP length as continuous variable
	DRP	β	95%CI		P		DRP	β	95%CI		P
DRP: daily rest period , 95%CI: 95 confidence interval; Weekly DRP length was included as a fixed factor, while participant was entered as a random factor, and covariates of age, gender, week, and day were included. β represents the regression coefficient for the fixed effect model and the coefficents in bold show the significant difference level.
Sleep duration (h)	< 11h	(reference)					DRP (h)	0.24	0.17	0.32	0.000
	< 12h	0.33	－0.08	0.74	0.119
	< 13h	0.48	0.12	0.84	0.009
	< 14h	0.69	0.33	1.05	0.000
	≥ 14h	1.01	0.67	1.35	0.000
Sleep efficiency (%)	< 11h	(reference)					DRP (h)	0.1	－0.1	0.4	0.353
	< 12h	－0.49	－1.90	0.92	0.494
	< 13h	－0.46	－1.69	0.78	0.470
	< 14h	－0.53	－1.78	0.71	0.401
	≥ 14h	0.41	－0.76	1.58	0.490
Carry-over fatigue (0-100 mm)	< 11h	(reference)					DRP (h)	－3.4	－4.7	－2.1	0.000
	< 12h	－10.2	－17.1	－3.2	0.004
	< 13h	－8.9	－14.9	－2.9	0.004
	< 14h	－13.2	－19.3	－7.1	0.000
	≥ 14h	－15.2	－20.9	－9.6	0.000
Psychological detachment from work (0-100 mm)	< 11h	(reference)					DRP (h)	2.6	1.2	4.0	0.000
	< 12h	3.7	－3.7	11.0	0.326
	< 13h	0.0	－6.4	6.3	0.995
	< 14h	7.1	0.6	13.5	0.031
	≥ 14h	9.6	3.6	15.6	0.002
PVT reaction times (msec)	< 11h	(reference)					DRP (h)	0.8	－4.8	6.3	0.790
	< 12h	18.3	－10.6	47.3	0.214
	< 13h	11.0	－14.2	36.2	0.394
	< 14h	17.5	－8.0	43.1	0.178
	≥ 14h	6.1	－18.0	30.1	0.621
PVT lapses (number)	< 11h	(reference)					DRP (h)	－0.1	－0.4	0.3	0.696
	< 12h	0.57	－1.29	2.42	0.549
	< 13h	0.18	－1.44	1.79	0.832
	< 14h	0.20	－1.44	1.84	0.813
	≥ 14h	－0.14	－1.69	1.41	0.862