Table 1.
Baseline characteristics of the participants with new-onset diabetes mellitus stratified by tertile of body mass index.
| Tertile 1 | Tertile 2 | Tertile 3 | P value∗ | Total | |
|---|---|---|---|---|---|
| Number of participants | 441 | 441 | 440 | — | 1322 |
| Median body mass index (kg·m−2) | 24.9 | 28.9 | 33.8 | — | 28.9 |
| Minimum body mass index (kg·m−2) | 15.7 | 26.9 | 31.1 | — | 15.7 |
| Maximum body mass index (kg·m−2) | 26.9 | 31.1 | 57.7 | — | 57.7 |
| Categorically distributed variables | |||||
| Male | 259 (0.59) | 213 (0.48) | 118 (0.27) | <0.001 | 590 (0.45) |
| Smoker | 67 (0.15) | 55 (0.13) | 32 (0.07) | <0.001 | 154 (0.12) |
| Blood pressure lowering drug usage | 107 (0.24) | 118 (0.27) | 136 (0.31) | <0.001 | 361 (0.27) |
| History of previous cardiovascular disease | 76 (0.18) | 90 (0.21) | 80 (0.18) | 0.957 | 246 (0.19) |
| Assigned to life style modification intervention | 160 (0.36) | 170 (0.39) | 166 (0.38) | 0.549 | 496 (0.38) |
| Continuously distributed variables | |||||
| Age (years) | 55.22 (11.96) | 53.48 (11.69) | 52.25 (10.93) | <0.001 | 53.65 (11.59) |
| Systolic blood pressure (mmHg) | 127.40 (20.77) | 130.02 (22.75) | 132.52 (21.79) | <0.001 | 129.97 (21.86) |
| Total cholesterol (mmol·l−1) | 5.65 (1.23) | 5.84 (1.32) | 5.82 (1.21) | 0.001 | 5.77 (1.26) |
| High-density lipoprotein cholesterol (mmol·l−1) | 1.03 (0.28) | 1.01 (0.29) | 1.04 (0.26) | 0.002 | 1.03 (0.28) |
| Waist circumference (cm) | 87.87 (8.05) | 97.31 (6.98) | 106.03 (8.44) | <0.001 | 97.06 (10.87) |
| Hip circumference (cm) | 94.80 (5.03) | 101.87 (4.56) | 112.87 (5.58) | <0.001 | 103.16 (9.75) |
| Outcome | |||||
| All-cause mortality | 48 (10.9) | 33 (7.5) | 27 (6.1) | 0.236 | 108 (8.2) |
| All-cause mortality rate, per (10 000 person-year) | 90.8 (65.8–125.3) | 53.7 (35.0–82.3) | 64.2 (44.0–93.5) | 0.140 | 69.7 (56.3–86.2) |
Data are presented as mean (SD) or frequency (%) for continuously and categorically distributed variables, respectively.
Mortality is presented as per 10 000 person-years (95% CIs).
*P values were obtained from general linear models adjusted for age for independent variables; mortality rates were compared using Cox proportional hazard regression model.