. Author manuscript; available in PMC: 2012 Feb 15.

Published in final edited form as: Cancer. 2010 Oct 8;117(4):841–847. doi: 10.1002/cncr.25507

Table 4. Gender Specific Risk Estimates of Colorectal Adenoma for Sleep Duration, Sleep Apnea, and Shift Work.

	Males			Females
	Cases/Controls	OR (95% CI)^*	p	Cases/Controls	OR (95% CI)^§	p
Average Hours Sleep Per Night			0.25^§			0.04^§
>7	63/139	1.00 (referent)		58/143	1.00 (referent)
6-7	54/93	1.39 (0.85-2.28)		46/163	1.12 (0.73-1.72)
<6	37/55	1.31 (0.74-2.34)		73/298	1.58 (1.03-2.43)
Sleep Apnea Diagnosis	21/24	1.52 (0.76-3.05)	0.23	12/34	1.18 (0.58-2.42)	0.65
Ever worked alternate shift	100/154	1.39 (0.89-2.17)	0.15	82/260	0.99 (0.69-1.43)	0.96

Logistic regression odds ratio and p-value, accounting for age, race, income, smoking (ever/never/current), family history of colorectal cancer (yes/no) and waist-to-hip ratio (338 cases and 902 controls)

^§

p for trend