Skip to main content

Table 4 Odds ratios a of diabetes according to quartiles of dietary GL, stratified analysis, 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 of energy adjusted dietary glycemic load P-trend
  1 2 3 4
Men (n) 6943   6942   6942   6942  
BMI b,c         
BMI I < 25, OR (95% CI) 1.00 1.09 (0.80-1.50) 1.17 (0.84-1.62) 1.05 (0.72-1.52) 0.77
BMI I ≥ 25, OR (95% CI) 1.00 1.05 (0.72-1.52) 1.39 (0.97-2.00) 1.31 (0.88-1.96) 0.34
Physical activity (metabolic equivalents -h/d)b,d       
Lower than median, OR (95% CI) 1.00 1.51 (1.06-2.14) 1.30 (0.89-1.91) 1.26 (0.81-1.94) 0.46
Median or higher, OR (95% CI) 1.00 1.30 (0.89-1.89) 1.57 (1.07-2.31) 1.30 (0.85-1.99) 0.21
Dietary fiber intake e         
Lower than median, OR (95% CI) 1.00 1.25 (0.91-1.72) 1.21 (0.86-1.69) 1.20 (0.82-1.76) 0.43
Median or higher, OR (95% CI) 1.00 1.45 (1.04-2.03) 1.34 (0.94-1.91) 1.09 (0.74-1.61) 0.81
Total fat intake         
Lower than median, OR (95% CI) 1.00 1.19 (0.81-1.74) 1.12 (0.75-1.68) 1.10 (0.70-1.74) 0.88
Median or higher, OR (95% CI) 1.00 1.51 (1.12-2.03) 1.46 (1.04-2.06) 1.25 (0.84-1.86) 0.17
Women (n) 9216   9216   9216   9216  
BMI b,c         
BMI I < 25, OR (95% CI) 1.00 1.37 (0.89-2.12) 1.29 (0.80-2.08) 1.26 (0.70-2.29) 0.03
BMI I ≥ 25, OR (95% CI) 1.00 1.19 (0.79-1.77) 1.01 (0.64-1.59) 1.22 (0.69-2.16) 0.09
Physical activity (metabolic equivalents -h/d)b,d       
Lower than median, OR (95% CI) 1.00 1.13 (0.74-1.73) 1.01 (0.63-1.63) 0.91 (0.49-1.70) 0.57
Median or higher, OR (95% CI) 1.00 1.41 (0.86-2.32) 1.05 (0.58-1.90) 1.12 (0.52-2.43) 0.48
Dietary fiber intake e         
Lower than median, OR (95% CI) 1.00 1.51 (1.002-2.28) 1.38 (0.90-2.11) 1.56 (0.98-2.49) 0.11
Median or higher, OR (95% CI) 1.00 1.13 (0.77-1.66) 1.15 (0.78-1.70) 1.37 (0.93-2.02) 0.12
Total fat intake         
Lower than median, OR (95% CI) 1.00 1.09 (0.68-1.77) 1.13 (0.70-1.82) 1.32 (0.79-2.20) 0.23
Median or higher, OR (95% CI) 1.00 1.37 (0.95-1.96) 1.14 (0.75-1.75) 1.44 (0.93-2.23) 0.14
  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.
  2. bOnly individuals whose data was available were analyzed. BMI: 27,205 for men and 35,972 for women. Physical activity: 23117 for men and 30429 for women.
  3. cThe model was not adjusted for BMI.
  4. dThe model was not adjusted for physical activity.
  5. eThe model was not adjusted for dietary fiber intake.