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Table 2 Geometric mean serum hormone concentrations by categories of BMI

From: Body Mass Index, percent body fat, and regional body fat distribution in relation to leptin concentrations in healthy, non-smoking postmenopausal women in a feeding study

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
  1. Model 1 (n = 51) adjusted for age, race, family history of breast cancer, parity and menarche < 12 years.
  2. Multiple R2 = 0.56
  3. †† 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.