Table 4.

Risk of Overall Cance According to Brown Rice Intake in the HPFS, NHS I, and NHS II

Brown Rice Intake, No. of Servings
	< 1/week	1/week	2-4/week	≥ 5/week	p-value
NHS
No. of cases	14,107	798	707	61
RR (95% CI)
Model 1a	1 (ref)	0.99 (0.92, 1.06)	0.95 (0.88, 1.03)	0.98 (0.76, 1.25)	0.25
Model 2b	1 (ref)	1.01 (0.94, 1.09)	0.99 (0.92, 1.07)	1.05 (0.82, 1.36)	0.88
Model 3c	1 (ref)	1.02 (0.95, 1.10)	1.00 (0.93, 1.09)	1.07 (0.84, 1.38)	0.69
NHS II
No. of cases	4,233	478	388	50
RR (95% CI)
Model 1a	1 (ref)	1.01 (0.92, 1.11)	0.95 (0.85, 1.05)	1.20 (0.91, 1.59)	0.95
Model 2b	1 (ref)	1.01 (0.92, 1.11)	0.93 (0.84, 1.03)	1.22 (0.92, 1.62)	0.88
Model 3c	1 (ref)	1.02 (0.93, 1.13)	0.95 (0.85, 1.06)	1.28 (0.96, 1.70)	0.66
HPFS
No. of cases	8,886	999	856	92
RR (95% CI)
Model 1a	1 (ref)	0.98 (0.92, 1.05)	0.95 (0.88, 1.01)	0.86 (0.70, 1.06)	0.04
Model 2b	1 (ref)	1.00 (0.93, 1.06)	0.95 (0.89, 1.04)	0.93 (0.75, 1.14)	0.18
Model 3c	1 (ref)	1.00 (0.94, 1.07)	0.96 (0.91, 1.05)	0.95 (0.77, 1.17)	0.36
Pooled results
RR (95% CI)	1 (ref)	1.01 (0.97, 1.06)	0.98 (0.94, 1.03)	1.07 (0.90, 1.26)	0.97
P heterogeneity		0.91	0.74	0.25	0.59

Abbreviation: CI, confidence interval; HPFS, Health Professionals Follow-up Study; NHS, Nurses’ Health Study

^aAge-adjusted.

^bAdjusted for the same sets of covariates as for model 2 and model 3 in table 2

^cAdjusted for the same sets of covariates as for model 2 and model 3 in table 2