Table 2.

Self-rated sleep quality (1 = Poor to 4 = Very good) regressed on work schedule instability.

Works on-call		−0.121	***
		(7.32)
Shift-timing change				−0.193	***
				(12.78)
Works clopening shift						−0.194	***
						(13.48)
Less than 1 week schedule notice (reference)
1–2 weeks' schedule notice								0.0673	***
								(3.78)
2–3 weeks' schedule notice								0.0998	***
								(5.16)
3–4 weeks' schedule notice								0.135	***
								(5.22)
4+ weeks' schedule notice								0.142	***
								(4.18)
No schedule control (reference)
A little schedule control										0.18	***
										(11.72)
Some schedule control										0.185	***
										(7.34)
A lot of schedule control										0.256	***
										(4.61)
N		16,171		16,316		16,263		16,222		16,025

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.