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Table 3 Effects of a 2-year soy intervention on leptin levels by ethnicity and body mass index1

From: Inflammatory markers in a 2-year soy intervention among premenopausal women

Subgroup Time (months) Control Intervention P-values
   N Mean SD N Mean SD Group Time Interaction
Asian 0 38 12.6 8.5 36 17.1 12.5    
  3 33 13.5 10.6 31 16.5 14.0    
  6 36 15.0 11.0 33 15.0 8.0    
  12 38 15.0 10.5 34 16.3 12.4    
  24 35 14.7 9.9 33 16.6 14.3 0.06 0.10 0.01
Non-Asian 0 55 23.5 18.0 54 21.0 16.4    
  3 51 24.2 19.5 51 21.6 15.7    
  6 53 24.7 19.0 53 22.4 17.4    
  12 51 25.7 19.6 52 21.4 15.3    
  24 50 25.3 21.0 50 20.9 15.1 0.70 0.15 0.63
BMI <25 kg/m2 0 48 9.8 7.0 46 11.5 6.8    
  3 44 10.3 7.8 42 11.5 8.0    
  6 44 11.2 8.2 42 12.0 8.0    
  12 44 10.5 6.4 41 11.0 6.3    
  24 45 10.6 6.9 40 11.1 6.9 0.18 0.11 0.58
BMI 25–30 kg/m2 0 25 21.1 7.7 23 18.2 7.9    
  3 21 22.1 11.3 21 20.4 10.0    
  6 24 22.9 11.6 25 19.7 8.4    
  12 26 22.9 10.4 27 20.7 10.9    
  24 23 21.5 10.1 28 20.5 10.6 0.67 0.23 0.94
BMI >30 kg/m2 0 20 38.7 19.6 21 38.1 17.8    
  3 19 40.1 20.7 19 36.7 17.8    
  6 20 39.0 20.4 19 36.3 19.6    
  12 19 43.4 19.3 18 36.6 16.3    
  24 17 47.7 19.4 15 38.5 18.9 0.71 0.02 0.005
  1. 1Obtained from mixed linear models; log-transformed values were used and back-transformed means are presented.