Table 4.

Odds Ratios and 95% Confidence Intervals for Subgroup Analyses of the Index Child's Sex and Age at Diagnosis Among Cases (n = 222) and Controls (n = 336) From the Children's Oncology Group, United States, 1993–2001

Subgroup	Western		Fruits and Vegetables		Proteins		Healthful
	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI
Overall (both sexes, all ages)
Crude	1.09	0.92, 1.30	0.86	0.72, 1.02	1.00	0.84, 1.19	0.87	0.73, 1.03
Model 1a	1.09	0.92, 1.31	0.87	0.73, 1.04	0.98	0.83, 1.17	0.95	0.80, 1.14
Model 2b	1.09	0.91, 1.30	0.83	0.69, 0.99	0.95	0.80, 1.14	0.91	0.76, 1.09
Sexc
Boys (n = 210)	1.10	0.75, 1.62	0.66	0.47, 0.92	0.86	0.59, 1.26	0.99	0.70, 1.40
Girls (n = 347)	1.08	0.89, 1.32	0.91	0.72, 1.14	0.97	0.79, 1.19	0.90	0.73, 1.12
Age at diagnosisd
≤5 years (n = 289)	1.09	0.87, 1.37	0.92	0.71, 1.19	0.86	0.68, 1.08	0.95	0.73, 1.22
>5 years (n = 269)	1.10	0.81, 1.50	0.76	0.57, 1.00	1.10	0.82, 1.48	0.86	0.65, 1.13

Abbreviations: CI, confidence interval; OR, odds ratio.

^aModel 1: adjusted for child's sex and age.

^bModel 2: adjusted for child's birth weight, maternal vitamin supplementation, and parity.

^cAdjusted for child's age, birth weight, maternal vitamin supplementation, and parity.

^dAdjusted for child's sex, birth weight, maternal vitamin supplementation, and parity.