Table 3.

Final regression models for sleep outcomes.

	Hours of sleep		ΔR2	Fatigue		ΔR2	Insufficient sleep		ΔR2
	β	p		β	p		β	p
STEP 1
Sex	0.05	0.46	0.04	−0.03	0.69	0.06	−0.09	0.16	0.04
Age	0.09	0.22		−0.09	0.26		−0.11	0.13
Marital statusa
Married	0.12	0.32		−0.11	0.37		−0.01	0.91
Single	0.18	0.16		−0.08	0.57		−0.07	0.52
Employmentb
Employed	−0.09	0.19		−0.17	0.02		−0.02	0.71
Student	−0.01	0.90		−0.02	0.75		−0.02	0.74
Young children	−0.06	0.45		−0.02	0.79		0.06	0.34
STEP 2
Self-regulation	−0.06	0.46	0.04	−0.18	0.02	0.13	−0.09	0.23	0.14
STEP 3
Bedtime procrastination	−0.52	<0.001	0.19	0.36	<0.001	0.09	0.56	<0.001	0.23

^aMarital status was recoded into two dummy variables: married (1= married, 0 = not married) and single (1 = single, 0 = not single).

^bEmployment was recoded into two dummy variables: employed (1 = employed, 0 = not employed) and student (1 = student, 0 = not a student).