Table 2

Geometric mean serum hormone concentrations by categories of BMI

BMI CATEGORY


Normal weight

Overweight

Obese

BMI categories

(BMI ≤ 25)

(BMI > 25 to ≤ 30)

(BMI > 30)

P-trend††

N

20

17

14

Model

Mean, 95%, CI

Mean, 95%, CI

Mean, 95%, CI


Leptin, ng/mL

1

8.59 (6.15–12.02)

16.32 (10.98–24.26)

30.09 (20.61–43.93)

< 0.0001


Model 1 (n = 51) adjusted for age, race, family history of breast cancer, parity and menarche < 12 years.

Multiple R2 = 0.56

††P-trend from linear regression models where trend is measured as a continuous value after assigning the normal weight category 0, overweight category 1, and obese category 2. P-values for these models where BMI is measured as a non-categorized continuous variable are available in Table 3.

Mahabir et al. Nutrition Journal 2007 6:3   doi:10.1186/1475-2891-6-3

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