Table 1.
Characteristics of the participants by quartiles of total testosterone.
| Total testosterone, nmol/L | |||||
|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | P for trend | |
| ≤12.60 | 12.61–15.70 | 15.71–19.91 | ≥19.92 | ||
| N | 1094 | 1059 | 1072 | 1075 | |
| Age, yr | 53 (13) | 52 (13) | 53 (14) | 58 (13) | <0.001 |
| Body mass index, kg/m2 | 26.3 (3.4) | 25.2 (3.1) | 24.5 (3.1) | 23.3 (3.1) | <0.001 |
| Waist circumference, cm | 87.8 (9.6) | 85.1 (9.1) | 83.4 (9.4) | 81.0 (9.2) | <0.001 |
| Neck circumference, cm | 37.0 (3.6) | 36.3 (3.4) | 35.6 (3.2) | 34.8 (2.6) | <0.001 |
| Waist-hip ratio | 0.91 (0.07) | 0.89 (0.07) | 0.89 (0.07) | 0.88 (0.08) | <0.001 |
| Triglycerides, mmol/L | 2.66 (2.92) | 1.95 (1.74) | 1.62 (1.19) | 1.28 (0.70) | <0.001 |
| HDL, mmol/L | 1.27 (0.31) | 1.31 (0.30) | 1.38 (0.32) | 1.47 (0.32) | <0.001 |
| LDL, mmol/L | 3.11 (0.76) | 3.06 (0.73) | 3.10 (0.76) | 3.06 (0.78) | 0.40 |
| Total cholesterol, mmol/L | 5.26 (1.22) | 5.12 (1.17) | 5.14 (1.08) | 5.09 (0.98) | <0.01 |
| Fasting plasma glucose, mmol/L | 6.09 (1.88) | 5.72 (1.45) | 5.56 (1.44) | 5.45 (1.10) | <0.001 |
| HbA1c, mmol/L | 5.8 (1.3) | 5.6 (1.0) | 5.6 (1.0) | 5.5 (0.7) | <0.001 |
| HOMA-IR | 2.11 (3.24) | 1.56 (3.73) | 1.29 (1.97) | 1.01 (1.20) | <0.001 |
| Systolic blood pressure, mmHg | 135 (20) | 134 (20) | 134 (21) | 135 (22) | 0.43 |
| Diastolic blood pressure, mmHg | 84 (13) | 82 (12) | 82 (13) | 81 (13) | <0.001 |
| Overweight, % | 50.2 | 46.4 | 36.9 | 25.0 | <0.001 |
| Obesity, % | 14.1 | 5.9 | 4.1 | 2.7 | <0.001 |
| Diabetes, % | 23.1 | 15.4 | 12.6 | 9.5 | <0.001 |
| Hypertension, % | 56.3 | 51.2 | 49.3 | 51.4 | <0.05 |
| Dyslipidemia, % | 62.6 | 43.3 | 38.7 | 26.0 | <0.001 |
| Metabolic syndrome, % | 37.9 | 24.2 | 20.7 | 11.5 | <0.001 |
The data are summarized as the mean (standard deviation) for continuous variables or as a number with proportion for categorical variables. P for trend was calculated by ANOVA and Chi-square test.