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Table 2 Odds ratio of diabetes according to quartile of dietary GI/GL in the JPHC Study

From: Dietary glycemic index, glycemic load and incidence of type 2 diabetes in Japanese men and women: the Japan public health center-based prospective study

  Quartile P-trend
  1 2 3 4
Men (n = 27769)         
Dietary GI         
No. of cases 152   172   187   179  
Age and area adjusted OR (95% CI) 1.00 1.13 (0.91-1.41) 1.24 (0.99-1.54) 1.17 (0.94-1.46) 0.12
Multivariate ORa (95% CI) 1.00 1.17 (0.93-1.48) 1.29 (1.01-1.65) 1.19 (0.90-1.59) 0.15
Energy-adjusted dietary GL         
No. of cases 147   194   184   165  
Age and area adjusted OR (95% CI) 1.00 1.34 (1.08-1.67) 1.27 (1.02-1.59) 1.13 (0.90-1.43) 0.46
Multivariate OR (95% CI) 1.00 1.34 (1.07-1.69) 1.27 (0.998-1.62) 1.16 (0.89-1.53) 0.40
Women (n = 36864)         
Dietary GI         
No. of cases 105   118   124   153  
Age and area adjusted OR (95% CI) 1.00 1.10 (0.85-1.44) 1.12 (0.86-1.46) 1.34 (1.03-1.72) 0.03
Multivariate OR (95% CI) 1.00 1.05 (0.79-1.38) 1.03 (0.77-1.38) 1.14 (0.81-1.60) 0.51
Energy-adjusted dietary GL         
No. of cases 92   124   126   158  
Age and area adjusted OR (95% CI) 1.00 1.35 (1.02-1.77) 1.34 (1.02-1.76) 1.66 (1.28-2.17) 0.0003
Multivariate OR (95% CI) 1.00 1.32 (0.999-1.75) 1.28 (0.96-1.71) 1.52 (1.13-2.04) 0.01
  1. aAge, public health center area, total energy intake, smoking status, family history of diabetes, physical activity (metabolic equivalents), hypertension, BMI, alcohol intake, magnesium, calcium, dietary fiber and coffee intake and occupation.