Table 3.

Odds ratios¹ of prostate cancer associated with deep-fried foods, stratified by tumor aggressiveness, King County, Washington, 1993–1996 and 2002–2005.

Food item	Less aggressive (n=1,015)			More aggressive (n=534)			P (heterogeneity)
	OR	(95% CI)	P (trend)	OR	(95% CI)	P (trend)
French fries
< 1 per month	1.00	(referent)	0.02	1.00	(referent)	0.01
1–3 times per month	1.21	(0.97–1.43)		1.16	(0.88–1.54)
≥ 1 per week	1.35	(1.06–1.71)		1.41	(1.05–1.87)		0.81
Fried chicken
< 1 per month	1.00	(referent)	0.10	1.00	(referent)	0.12
1–3 times per month	0.99	(0.82–1.19)		1.02	(0.81–1.28)
≥ 1 per week	1.29	(1.00–1.65)		1.30	(0.97–1.75)		0.94
Fried fish
< 1 per month	1.00	(referent)	0.29	1.00	(referent)	0.03
1–3 times per month	0.89	(0.74–1.07)		1.14	(0.92–1.43)
≥ 1 per week	1.27	(0.99–1.64)		1.41	(1.04–1.92)		0.52
Doughnuts
< 1 per month	1.00	(referent)	0.01	1.00	(referent)	0.03
1–3 times per month	1.10	(0.91–1.33)		1.03	(0.82–1.30)
≥ 1 per week	1.33	(1.06–1.67)		1.38	(1.06–1.80)		0.83
Snack chips
< 1 per month	1.00	(referent)	0.48	1.00	(referent)	0.29
1–3 times per month	0.89	(0.71–1.10)		1.00	(0.76–1.31)
≥ 1 per week	1.05	(0.84–1.32)		1.14	(0.87–1.31)		0.59

¹Adjusted for age, race, family history of prostate cancer, body mass index, PSA/DRE tests in previous 5 years, and education.