Table.

Self-reported Sleep and Rates of Colds and Infections

Characteristic	Incidence of Head or Chest Colds or of Infections, No. (Weighted %)	Model 1, OR (95% CI)a	P Value	Model 2, OR (95% CI)b	P Value
Head or Chest Colds
Sleep duration, h
≤5	624 (19.0)	1.28 (1.10–1.48)	.001	1.17 (1.01–1.35)	.04
6	828 (16.1)	1.04 (0.94–1.16)	.43	1.02 (0.91–1.14)	.75
7–8	1779 (15.5)	1 [Reference]		1 [Reference]
≥9	253 (15.7)	1.03 (0.89–1.20)	.69	0.97 (0.83–1.14)	.73
Sleep disorder
Yes	307 (18.9)	1.30 (1.09–1.54)	.003	1.18 (0.99–1.42)	.06
No	3186 (15.9)	1 [Reference]		1 [Reference]
Sleep disturbance
Yes	924 (18.3)	1.29 (1.15–1.45)	<.001	1.27 (1.13–1.42)	<.001
No	2571 (15.4)	1 [Reference]		1 [Reference]
Infectionsc
Sleep duration, h
≤5	188 (5.9)	1.82 (1.42–2.34)	<.001	1.51 (1.18–1.93)	.001
6	193 (3.4)	1.05 (0.82–1.34)	.71	0.97 (0.76–1.25)	.82
7–8	407 (3.3)	1 [Reference]		1 [Reference]
≥9	63 (2.9)	0.93 (0.73–1.19)	.58	0.83 (0.65–1.06)	.14
Sleep disorder
Yes	113 (7.0)	2.15 (1.63–2.83)	<.001	1.88 (1.39–2.53)	<.001
No	741 (3.4)	1 [Reference]		1 [Reference]
Sleep disturbance
Yes	281 (5.3)	1.73 (1.45–2.06)	<.001	1.67 (1.38–2.03)	<.001
No	576 (3.1)	1 [Reference]		1 [Reference]

^aModel 1 includes adjustment for age and sex.

^bModel 2 includes adjustment for age, sex, race/ethnicity, educational attainment, household income, marital status, smoking status, physical activity, body mass index, and survey year.

^cInfections include influenza, pneumonia, and ear infection.