Table 1.
Comparison of Vitamin D Levels Among Subjects with Different Characteristics
| Variables | Group | Number (N) | Values 
|
Proportion of Each Group (%) |
25(OH)D Concentrations (mmol/L) | P |
|---|---|---|---|---|---|---|
| Age (years) | 18–44 | 1089 | 31.89±6.72 | 56.5 | 14.61±5.86 | 0.001 |
| 45–59 | 536 | 50.93±4.29 | 27.8 | 13.60±5.83 | ||
| ≥60 | 303 | 68.34±6.34 | 15.7 | 13.45±6.36 | ||
| Gender | Male | 958 | - | 49.7 | 15.46±6.01 | 0.000 |
| Female | 970 | - | 50.3 | 12.85±5.61 | ||
| BMI (kg/m2) | <18.5 | 80 | 17.68±0.65 | 4.1 | 14.33±5.51 | 0.12 |
| ≥18.5 and<24.0 | 927 | 21.67±1.44 | 48.1 | 13.69±5.99 | ||
| ≥24.0 and<28.0 | 714 | 25.64±1.12 | 37.0 | 14.63±6.00 | ||
| ≥28 | 207 | 30.11±1.89 | 10.8 | 14.46±5.62 | ||
| Glycemic status (mmol/L) | FPG<5.6 | 1492 | 4.90±0.48 | 77.3 | 14.37±6.02 | 0.002 |
| FPG≥5.6 | 436 | 6.31±1.44 | 22.7 | 13.35±5.65 | ||
| H2PG<7.8 | 1516 | 6.13±0.81 | 78.6 | 14.19±5.94 | 0.492 | |
| H2PG≥7.8 | 412 | 10.17±3.22 | 21.4 | 13.97±5.99 | ||
| Lipid levels (mmol/L) | TC<5.2 | 1582 | 4.07±0.66 | 82.0 | 14.19±5.89 | 0.475 |
| TC≥5.2 | 346 | 5.87±0.59 | 18.0 | 13.93±6.25 | ||
| TG<1.7 | 1378 | 1.05±1.32 | 71.5 | 14.34±5.98 | 0.024 | |
| TG≥1.7 | 550 | 2.85±1.39 | 28.5 | 13.66±5.85 | ||
| LDL-C<3.4 | 1671 | 2.41±0.54 | 86.7 | 14.16±5.91 | 0.818 | |
| LDL-C≥3.4 | 257 | 3.89±0.55 | 13.3 | 14.06±6.21 | ||
| HDL-C≥1.04 | 1776 | 1.54±0.35 | 92.1 | 14.10±5.94 | 0.217 | |
| HDL-C<1.04 | 152 | 0.93±0.11 | 7.9 | 14.72±6.13 | ||
| Blood glucose level | Normal | 1296 | - | 67.2 | 14.43±5.98 | 0.01 |
| IGT/IFG | 526 | - | 27.3 | 13.51±5.92 | ||
| Diabetes | 106 | - | 5.5 | 13.86±5.46 | ||
| Dyslipidemia | No | 1102 | - | 57.2 | 14.40±5.99 | 0.027 |
| Yes | 826 | - | 42.8 | 13.80±5.89 |
Abbreviations: BMI, body mass index; FPG, fasting plasma glucose; H2PG, plasma glucose 2 hours after taking glucose; TC, total cholesterol; TG, triglycerides; LDL-C, low-density lipoprotein cholesterol; HDL-C, high-density lipoprotein cholesterol; 25(OH)D, 25-hydroxyvitamin D; IGT, impaired glucose tolerance, IFG, impaired fasting glucose.