Table 3.

Has difficulty falling asleep (1 = Never to 5 = Every day) regressed on work schedule instability.

Works on-call		0.283	***
		(11.42)
Shift-timing change				0.309	***
				(13.65)
Works clopening shift						0.306	***
						(14.20)
Less than 1 week schedule notice (reference)
1–2 weeks' schedule notice								−0.101	***
								(3.76)
2–3 weeks' schedule notice								−0.117	***
								(4.04)
3–4 weeks' schedule notice								−0.158	***
								(4.07)
4+ weeks' schedule notice								−0.173	***
								(3.41)
No schedule control (reference)
A little schedule control										−0.226	***
										(9.79)
Some schedule control										−0.246	***
										(6.51)
A lot of schedule control										−0.438	***
										(5.21)
N		15,342		15,485		15,430		15,393		15,222

T-statistics in parentheses. *p < 0.05, **p < 0.01, ***p < 0.001.

All models control for the socioeconomic, demographic, and job characteristics listed in Table 1.