Table 1.
Characteristics of the studied subjects according to blood glucose levels.
| Variables | NGT (n = 998) | IFG (n = 176) | IGT (n = 121) | IFG + IGT (n = 57) | Diabetes (n = 190) | P value |
|---|---|---|---|---|---|---|
| Gender (male) | 318 (31.9) | 54 (30.7) | 49 (40.5)∗# | 24 (42.1)∗# | 77 (40.5)∗# | 0.033 |
| Age (year) | 56.0 ± 6.7 | 56.2 ± 6.6 | 57.5 ± 6.6 | 58.3 ± 6.1∗# | 58.3 ± 6.7∗# | <0.001 |
| Height (cm) | 155.9 ± 7.3 | 156.2 ± 7.3 | 156.3 ± 6.9 | 156.0 ± 7.2 | 156.5 ± 7.7 | 0.825 |
| Weight (kg) | 52.9 ± 8.1 | 54.0 ± 8.4 | 54.1 ± 7.9 | 54.9 ± 9.1 | 55.4 ± 8.4∗ | 0.001 |
| BMI (kg/m2) | 21.8 ± 2.6 | 22.1 ± 2.6 | 22.1 ± 2.9 | 22.5 ± 3.0 | 22.6 ± 2.8∗ | 0.001 |
| SBP (mmHg) | 122.5 (112.5–137.7) | 126.8∗ (114.5–137.5) | 129.0∗# (117.3–143.8) | 139.0∗# (120.8–149.5) | 134.5∗# (121.0–147.1) | <0.001 |
| DBP (mmHg) | 80.0 (71.0–87.5) | 80.0 (70.0–84.8) | 82.5∗# (75.0–91.3) | 85.5∗# (75.3–92.3) | 82.0∗# (73.9–90.0) | <0.001 |
Data are expressed as the mean with standard deviation and median (interquartile range), except for gender as number (percentage). P value for difference between the groups was calculated from the one-way ANOVA or Kruskal–Wallis test or chi-squared test: ∗vs. NGT group and #vs. IFG group. NGT, normal glucose tolerance; IFG, impaired fasting glucose; IGT, impaired glucose tolerance; BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure.