TABLE 2.

RR of incident diabetes in postmenopausal women by quintile of low-fat dairy food intake

	Quintiles of intake
	Quintile 1	Quintile 2	Quintile 3	Quintile 4	Quintile 5	P-trend3
n	18,037	15,915	16,024	16,050	16,047
Person years	132,589	119,273	121,631	122,769	122,664
Diabetes cases, n (%)	1,078 (6.0)	842 (5.3)	714 (4.4)	644 (4.0)	668 (4.2)
Age, race, energy1	1.00 (reference)	0.86 (0.78, 0.95)	0.75 (0.68–0.83)	0.68 (0.61–0.75)	0.70 (0.64–0.77)	<0.0001
Multivariable model2	1.00 (reference)	0.97 (0.68–1.38)	0.63 (0.43–0.93)	0.48 (0.32–0.73)	0.60 (0.41–0.89)	0.0006
Multivariable model2 + dietary glycemic load	1.00 (reference)	0.98 (0.68–1.40)	0.64 (0.44–0.95)	0.49 (0.32–0.74)	0.62 (0.42–0.91)	0.001
Multivariable model2 + dietary total fat	1.00 (reference)	0.99 (0.69–1.41)	0.66 (0.45–0.97)	0.51 (0.33–0.77)	0.66 (0.45–0.98)	0.004
Multivariable model2 + dietary fiber	1.00 (reference)	0.98 (0.68–1.40)	0.64 (0.43–0.95)	0.48 (0.32–0.74)	0.62 (0.42–0.91)	0.001
Multivariable model2 + total magnesium	1.00 (reference)	0.97 (0.68–1.39)	0.64 (0.43–0.94)	0.49 (0.32–0.74)	0.62 (0.42–0.91)	0.001
Multivariable model2 + dietary glycemic load + dietary total fat + dietary total fiber + total magnesium	1.00 (reference)	0.96 (0.69–1.41)	0.65 (0.44–0.97)	0.50 (0.33–0.76)	0.65 (0.44–0.96)	0.003

¹RR (95% CI) adjusted for age, race/ethnicity, total energy intake

²RR (95% CI) adjusted for age, race/ethnicity, total energy intake, income, education, smoking, alcohol intake, family history of diabetes, use of postmenopausal hormone therapy, systolic blood pressure, diastolic blood pressure, BMI, physical activity, and an interaction term between quintiles of low-fat dairy food and BMI.

³Linear trends were tested by using the median value of each category as an ordinal variable.