Table 2—

Characteristics of baseline diabetes-free population by quintiles of glycemic index, ARIC 1987–1989.

Glycemic index quintiles (mean)
Whites
African-Americans
1 (69.1)2 (74.5)3 (77.2)4 (79.7)5 (83.4)1 (71.7)2 (77.6)3 (80.2)4 (82.6)5 (86.6)
Women63.755.951.647.249.376.666.261.057.952.3
Incidence of diabetes10.09.99.210.411.418.617.416.618.416.7
Age (years)54.1 ± 5.654.3 ± 5.754.0 ± 5.654.2 ± 5.854.2 ± 5.752.4 ± 5.652.8 ± 5.753.1 ± 5.853.6 ± 5.753.5 ± 5.9
BMI (kg/m2)26.7 ± 4.526.7 ± 4.526.5 ± 4.526.6 ± 4.526.6 ± 4.729.8 ± 6.229.0 ± 5.828.9 ± 6.029.0 ± 5.728.9 ± 6.3
Smoking status
 Current24.821.424.123.224.728.724.829.830.035.6
 Former35.936.835.336.134.021.521.623.624.124.6
 Never39.341.840.740.641.249.853.646.646.039.8
Physical activity
 Low30.833.632.635.938.647.656.358.658.561.8
 Medium31.431.931.333.730.729.826.425.028.126.8
 High37.834.636.230.430.822.617.216.413.411.4
Education
 Less than High school13.512.714.616.118.128.729.534.640.654.3
 High school33.534.236.537.440.222.121.819.921.023.3
 Vocational school9.69.18.88.610.08.37.77.76.45.5
 College32.833.030.029.124.521.022.820.319.810.3
 Graduate/professional school10.510.910.08.87.320.018.217.512.16.6
Dietary factors
 Total energy intake (kcal/day)1,566 ± 5741,647 ± 5751,658 ± 5651,673 ± 5721,581 ± 5381,606 ± 6241,654 ± 6091,674 ± 5831,587 ± 5301,483 ± 500
 Total dietary fiber (g/day)18.2 ± 9.418.3 ± 8.317.8 ± 7.317.3 ± 7.115.9 ± 6.820.2 ± 10.617.8 ± 7.816.3 ± 6.914.0 ± 5.911.9 ± 4.8
 Cereal fiber (g/day)2.9 ± 2.33.5 ± 2.33.8 ± 2.24.0 ± 2.64.1 ± 2.62.7 ± 1.83.2 ± 1.93.3 ± 2.03.3 ± 2.03.4 ± 1.7
 Fruit fiber (g/day)8.6 ± 4.67.9 ± 3.47.2 ± 2.96.6 ± 2.75.9 ± 2.29.6 ± 6.17.8 ± 3.56.7 ± 2.85.9 ± 2.34.9 ± 1.6
 Legume fiber (g/day)1.4 ± 1.71.5 ± 1.61.4 ± 1.41.3 ± 1.31.0 ± 1.11.5 ± 1.61.3 ± 1.41.3 ± 1.21.0 ± 1.00.8 ± 0.8
 Glycemic load122 ± 53141 ± 56150 ± 59159 ± 63160 ± 66136 ± 64156 ± 64164 ± 66161 ± 63151 ± 63
  • Data are means ± SD or %.