表 2. General characteristics, urine iodine and TSH of the subjects.
受试者基本特征与尿碘、TSH情况
| Characteristic | Urban (n=1055) | Rural (n=804) | Male (n=803) | Female (n=1056) | Total (n=1859) |
| *P<0.05, **P<0.01, ***P<0.001, vs. urban subjects; #P<0.01, ##P<0.001, vs. male. Δ Data were shown as median (P25, P75) ; BMI: Body mass index; SBP: Systolic blood pressure; DBP: Diastolic blood pressure; HR: Heart rate; UIC: Urine iodine concentration; TSH: Thyroid stimulating hormone. | |||||
| Age/yr. | 45.80±16.70 | 50.38±13.92*** | 49.72±15.13 | 46.31±16.00## | 47.78±15.72 |
| Height/cm | 161.22±8.25 | 158.47±7.91*** | 165.31±7.00 | 156.02±6.65## | 160.03±8.22 |
| Body mass/kg | 61.35±18.71 | 61.06±10.22 | 66.85±20.16 | 56.95±8.83## | 61.22±15.61 |
| BMI/(kg/m2) | 23.54±6.86 | 24.28±3.44* | 24.43±7.56 | 23.42±3.53## | 23.86±5.65 |
| Waistline/cm | 83.45±11.82 | 85.09±10.03** | 87.23±11.68 | 81.83±10.05## | 84.16±11.11 |
| SBP/mmHg | 120.68±18.87 | 132.15±21.69*** | 128.77±19.03 | 123.27±21.96## | 125.65±20.92 |
| DBP/mmHg | 78.18±10.86 | 84.80±12.92*** | 83.15±12.44 | 79.46±11.85## | 81.06±12.24 |
| HR/min－1 | 77.25±10.30 | 78.79±8.58*** | 77.79±10.20 | 78.01±9.17# | 77.91±9.62 |
| Family history/case (%) | 26 (2.46) | 33 (4.10)* | 27 (3.36) | 32 (3.03) | 59 (3.17) |
| Iodized salt/case (%) | 1016 (96.30) | 791 (98.38)** | 787 (98.01) | 1020 (96.59) | 1807 (97.20) |
| Smoking/case (%) | 219 (20.76) | 240 (29.85)*** | 434 (54.05) | 25 (2.37)## | 459 (24.69) |
| UIC/(μg/L)Δ | 198.40 (135.00, 292.90) | 144.44 (102.62, 206.04)*** | 172.10 (126.00, 255.73) | 172.15 (109.24, 256.27) | 172.10 (118.30, 256.00) |
| TSH/(mIU/L)Δ | 2.73 (1.93, 4.06) | 2.23 (1.52, 3.18)*** | 2.29 (1.57, 3.27) | 2.64 (1.86, 3.96)## | 2.49 (1.73, 3.64) |