Table 1.
Characteristics of the study population.
| Characteristics | Men (N = 4993) | Women (N = 2879) | P value |
|---|---|---|---|
| Age (years) | 48.54 ± 10.84 | 52.28 ± 12.5 | < 0.0001 |
| BMI (kg/m2) | 25.38 ± 3.11 | 23.44 ± 3.17 | < 0.0001 |
| SBP (mmHg) | 128.71 ± 18.03 | 125.75 ± 21.24 | < 0.0001 |
| DBP (mmHg) | 80.07 ± 12.48 | 73.95 ± 12.34 | < 0.0001 |
| Homocysteine (umol/L)a | 12.5 (6.0) | 9.1 (2.9) | < 0.0001 |
| Cystatin C (mg/L) | 0.94 ± 0.17 | 0.83 ± 0.16 | < 0.0001 |
| Creatinine (umol/L) | 83.88 ± 14.13 | 61.50 ± 11.51 | < 0.0001 |
| UA (umol/L) | 390.10 ± 84.44 | 279.14 ± 67.24 | < 0.0001 |
| BUN (mmol/L) | 5.23 ± 1.29 | 4.8 ± 1.32 | < 0.0001 |
| eGFR (ml/min/1.73 m2) | 96.92 ± 18.81 | 111.96 ± 24.79 | < 0.0001 |
| fT3 (pg/mL) | 2.97 ± 0.77 | 2.78 ± 0.75 | < 0.0001 |
| fT4 (ng/dL) | 1.02 ± 0.16 | 1.02 ± 0.15 | 0.163 |
| TSH (uIU/mL) | 2 ± 2.79 | 2.48 ± 3.77 | < 0.0001 |
| TP (g/L) | 74.82 ± 3.97 | 75.44 ± 4.2 | < 0.0001 |
| ALB (g/L) | 45.72 ± 2.53 | 44.57 ± 2.46 | < 0.0001 |
| Glubulin (g/L) | 29.1 ± 3.54 | 30.86 ± 3.76 | < 0.0001 |
| K (mmol/L) | 4.37 ± 0.31 | 4.27 ± 0.3 | < 0.0001 |
| Ca (mmol/L) | 2.81 ± 0.91 | 2.81 ± 0.88 | 0.831 |
| Smokerb | 2307 (46.20%) | 99 (3.44%) | < 0.0001 |
| Drinkerb | 2761 (55.30%) | 492 (17.09%) | < 0.0001 |
Values are expressed as mean ± SD unless otherwise specified.
BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; UA, uric acid; BUN, blood urea nitrogen; eGFR, estimated glomerular filtration rate; TSH, thyroid stimulating hormone; fT3, free triiodothyronine; fT4, free thyroxine; TP, total protein; ALB, albumin; K, serum potassium; Ca, serum calcium.
aValues are expressed as median (interquartile range) due to significant skewness.
bValues are expressed as n (%). P values were based on independent two sample t test. aManne-Whitney U test. bChi-square test.