Table 2 Basic characteristics of the study subjects
From: Vitamin D deficiency and metabolic syndrome in elderly Chinese individuals: evidence from CLHLS
Characteristics | 25(OH)D status | P-value | ||
|---|---|---|---|---|
Sufficient(≥30 ng/ml) n = 574 | Insufficiency(20-30 ng/ml) n = 890 | Deficiency(< 20 ng/ml) n = 1029 | ||
MetS[Modified ATP III(2009)] (%) | 218 (39.1) | 373 (42.9) | 484 (48.6) | < 0.01 |
MetS[Modified Criteria(2012)] (%) | 241 (46.8) | 422 (51.6) | 506 (53.0) | 0.07 |
MetS(CDS) (%) | 124 (22.5) | 214 (25.4) | 295 (32.5) | < 0.01 |
Age group(≥80 years old) (%) | 291 (50.7) | 502 (56.4) | 766 (74.4) | < 0.01 |
Female(%) | 174 (30.3) | 419 (47.1) | 703 (68.3) | < 0.01 |
Education(%) | ||||
 illiteracy | 130 (40.8) | 233 (48.6) | 405 (63.0) | < 0.01 |
 1-9 years | 170 (53.3) | 228 (47.6) | 218 (33.9) |  |
  ≥ 10 years | 19 (6.0) | 18 (3.8) | 20 (3.1) |  |
Nationality(han) (%) | 432 (84.7) | 698 (91.5) | 858 (94.8) | < 0.01 |
Married(%) | 352 (61.5) | 434 (48.9) | 332 (32.4) | < 0.01 |
Smoking (%) | 135 (23.6) | 147 (16.6) | 152 (14.9) | < 0.01 |
Drinking (%) | 147 (25.8) | 150 (17.0) | 139 (13.6) | < 0.01 |
Physically active (%) | 532 (96.0) | 818 (93.6) | 910 (90.6) | < 0.01 |
Elevated WHR (%) | 391 (68.1) | 650 (73.1) | 792 (77.0) | < 0.01 |
Elevated BMI (%) | 190 (33.5) | 298 (34.5) | 292 (31.2) | < 0.01 |
Elevated WC (%) | 263 (45.8) | 468 (52.6) | 557 (54.1) | < 0.01 |
Rural (%) | 505 (96.7) | 740 (95.4) | 849 (92.9) | < 0.01 |
Season(%) | ||||
 Spring(3–5) | 7 (1.3) | 15 (1.8) | 14 (1.5) | 0.09 |
 Summer(6–8) | 1 (0.2) | 0 (0) | 0 (0) |  |
 Autumn(9–11) | 414 (76.0) | 670 (78.3) | 766 (81.5) |  |
 Winter(12–2) | 123 (22.6) | 171 (20.0) | 160 (17.0) |  |
Age(years) | 80.6 ± 10.1 | 83.7 ± 29.1 | 89 ± 27.4 | < 0.01 |
Systolic blood pressure(mmHg) | 149.5 ± 22.1 | 148.2 ± 23.3 | 148.3 ± 24.6 | 0.54 |
Diastolic blood pressure(mmHg) | 83.3 ± 12.6 | 82.3 ± 12.4 | 81.4 ± 12.7 | 0.02 |
Fasting plasma glucose(mmol/L) | 5.4 ± 1.8 | 5.5 ± 1.7 | 6.9 ± 4.3 | < 0.01 |
Glycosylated serum protein (μmol/L) | 255.1 ± 44.1 | 259.7 ± 37.8 | 246.9 ± 61.6 | < 0.01 |
BMI(kg/m2) | 22.5 ± 3.5 | 22.7 ± 3.8 | 22.5 ± 7.3 | 0.71 |
Triglyceride(mmol/L) | 1.3 ± 0.7 | 1.4 ± 0.9 | 1.7 ± 1.4 | < 0.01 |
HDL cholesterol(mmol/L) | 1.5 ± 0.4 | 1.4 ± 0.4 | 1.4 ± 0.4 | 0.05 |
Total cholesterol(mmol/L) | 4.7 ± 0.9 | 4.8 ± 1 | 4.8 ± 1 | 0.27 |
weight (Kg) | 56.4 ± 11.7 | 54.8 ± 12.6 | 51.1 ± 12.6 | < 0.01 |
Height(cm) | 157.7 ± 10 | 154.9 ± 10.3 | 150.7 ± 11 | < 0.01 |
Waist circumference(cm) | 85.4 ± 9.9 | 85.7 ± 10.6 | 83.9 ± 11.2 | < 0.01 |
WHR | 0.92 ± 0.08 | 0.92 ± 0.08 | 0.92 ± 0.07 | 0.93 |