Table 4.

Multivariable-adjusted Association between Energy-adjusted Dietary Factors and Risk of Endometrial Cancer Among Women in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial, by Body Mass Index Category, United States, 1993–2001

Dietary Factor and Body Mass Indexa Category	No. of Controls	No. of Cases	Hazard Ratiob,c	95% Confidence Interval	P for Interactiond
Total available carbohydrate
18.5–<25	15,296	115	0.89	0.71, 1.13	0.55
25–<30	12,236	118	0.74	0.59, 0.94
≥30	7,802	148	0.82	0.66, 1.01
Glycemic index
18.5–<25	15,296	115	0.90	0.75, 1.08	0.37
25–<30	12,236	118	0.83	0.69, 1.00
≥30	7,802	148	1.05	0.89, 1.23
Glycemic load
18.5–<25	15,296	115	0.87	0.70, 1.10	0.31
25–<30	12,236	118	0.71	0.56, 0.89
≥30	7,802	148	0.85	0.69, 1.05
Starches
18.5–<25	15,296	115	0.95	0.76, 1.19	0.22
25–<30	12,236	118	0.90	0.71, 1.13
≥30	7,802	148	1.07	0.88, 1.37
Total sugars
18.5–<25	15,296	115	0.91	0.71, 1.17	0.29
25–<30	12,236	118	0.77	0.60, 0.99
≥30	7,802	148	0.78	0.63, 0.98
Fiber
18.5–<25	15,296	115	1.05	0.83, 1.33	0.15
25–<30	12,236	118	1.07	0.83, 1.38
≥30	7,802	148	0.96	0.75, 1.23

^a Weight (kg)/height (m)².

^b Hazard ratio for continuous increments of intake, calculated by dividing the energy-adjusted intake (except glycemic index) by the difference between the 75th and 25th percentiles.

^c Adjusted for age at completion of the Diet History Questionnaire (years), body mass index (continuous), age at menarche (<12, 12–13, or ≥14 years), age at menopause (<50 years vs. ≥50 years), race/ethnicity (non-Hispanic white, non-Hispanic black, Asian, or other), oral contraceptive use (ever/never), and energy intake (calculated by the nutrient density method, except for glycemic index, and including log kcal/day in the model).

^d Estimated by means of the Wald test.