Table 2.

Logistic Regression Estimating the Association between Shift Work and Sleep, NLSY-79 Cohort (N = 6,372).

	Short sleep weekday		Short sleep weekend		Insomnia symptoms		Sleep latency
	Odds ratios	95% CI	Odds ratios	95% CI	Odds ratios	95% CI	Odds ratios	95% CI
Shift
Evening	0.97	[0.68, 1.38]	1.05	[0.70, 1.57]	1.04	[0.73, 1.50]	0.87	[0.58, 1.31]
Night	2.19***	[1.57, 3.03]	1.34	[0.96, 1.87]	.93	[0.67, 1.29]	1.03	[0.71, 1.51]
Rotating	1.20	[0.89, 1.61]	1.06	[0.76, 1.48]	1.08	[0.78, 1.50]	0.99	[0.69, 1.41]
Irregular	1.46**	[1.18, 1.82]	1.64***	[1.29, 2.07]	1.18	[0.92, 1.50]	0.74*	[0.56, .99]

Note. All models control for gender, race-ethnicity, marital status, age, education, parenthood, care giver status, income, and self-rated health. CI = confidence interval.

^*p < .05.

^**p < .01.

^***p < .001 (two-tailed tests).