TABLE 3.
Clinical and anthropometric characteristics of study participants according to glucose tolerance status
| n | NGT | Isolated IFG | Isolated IGT | IFG + IGT | Newly diagnosed diabetes | P | Total | |
|---|---|---|---|---|---|---|---|---|
| n | — | 2,168 | 2,859 | 217 | 701 | 469 | — | 6,414 |
| Age (years) | 6,414 | 57.5 ± 6.7 | 56.9 ± 6.8 | 60.3 ± 6.9 | 59.2 ± 6.8* | 59.6 ± 6.4*† | 6 × 10−31 | 57.7 ± 6.8 |
| BMI (kg/m2) | 6,410 | 25.8 ± 3.4 | 27.0 ± 3.6 | 26.9 ± 3.7‡ | 28.9 ± 4.4 | 29.7 ± 4.9 | 8 × 10−131 | 27.0 ± 3.9 |
| Weight (kg) | 6,411 | 79.8 ± 11.7 | 83.9 ± 12.7 | 82.4 ± 13.4§‡ | 88.7 ± 14.8 | 91.0 ± 15.6 | 3 × 10−93 | 83.5 ± 13.3 |
| Waist circumference (cm) | 6,410 | 94.6 ± 9.6 | 97.9 ± 10.4 | 98.7 ± 10.1‡ | 103.5 ± 11.5 | 105.7 ± 12.0 | 2 × 10−140 | 98.0 ± 10.9 |
| Hip circumference (cm) | 6,409 | 99.4 ± 6.2 | 101.1 ± 6.4 | 100.6 ± 6.7§‡ | 103.4 ± 7.9 | 104.5 ± 8.1* | 3 × 10−73 | 101.1 ± 6.8 |
| Waist-to-hip ratio | 6,409 | 0.95 ± 0.06 | 0.97 ± 0.06 | 0.98 ± 0.06 | 1.00 ± 0.06 | 1.01 ± 0.07 | 1 × 10−119 | 0.97 ± 0.06 |
| Fat mass (%) | 6,401 | 22.5 ± 6.3 | 23.4 ± 6.0 | 26.2 ± 6.8 | 27.2 ± 6.7* | 27.7 ± 6.1† | 3 × 10−108 | 23.9 ± 6.5 |
| BMI ≥27 kg/m2 (median) | 6,410 | 669 (31) | 1,276 (45) | 110 (51) | 452 (65) | 324 (69) | 1 × 10−84 | 2,831 (44) |
| Positive family history of diabetes | 6,412 | 889 (41) | 1,340 (47) | 104 (48) | 348 (50) | 254 (54) | 5 × 10−8 | 2,935 (46) |
Data are means ± SD or n (%). P values for overall comparison between five categories of glucose tolerance are shown (ANOVA for continuous variables, χ2 test for categorical variables). Bonferroni post hoc tests (continuous variables): all pairwise comparisons between categories of glucose tolerance were significant at P < 0.05, except for those marked as follows:
*P > 0.05 vs. isolated IGT;
†P > 0.05 vs. IFG + IGT;
‡P > 0.05 vs. isolated IFG;
§P > 0.05 vs. NGT.