Table 1:
Comparison of general data [n(%)] (x±sd)
| Classification | Study group (n=85) | Control group (n=80) | t/χ2 | P |
|---|---|---|---|---|
| Age (yr) | 0.267 | 0.790 | ||
| 40.05±2.18 | 40.14±2.15 | |||
| Gestational age (weeks) | 0.894 | 0.373 | ||
| 40.25±1.25 | 40.08±1.19 | |||
| BMI (kg/m2) | 0.291 | 0.771 | ||
| 25.08±2.06 | 24.98±2.35 | |||
| Residence | 0.010 | 0.919 | ||
| Urban | 56 (65.88) | 55 (68.75) | ||
| Rural | 29 (34.12) | 25 (31.25) | ||
| Nationality | 0.049 | 0.826 | ||
| Han nationality | 69 (81.18) | 66 (82.50) | ||
| Minority nationalities | 16 (18.82) | 14 (17.50) | ||
| Educational level | 0.010 | 0.919 | ||
| ≥ High school | 58 (68.24) | 54 (67.50) | ||
| < High school | 27 (31.76) | 26 (32.50) | ||
| Occupation | 0.361 | 0.996 | ||
| Civil servants | 29 (34.12) | 27 (33.75) | ||
| Company employees | 23 (27.06) | 23 (28.75) | ||
| Self-employed | 14 (16.47) | 12 (15.00) | ||
| Workers | 10 (11.76) | 9 (11.25) | ||
| Farmers | 6 (7.06) | 5 (6.25) | ||
| Unemployed | 3 (3.53) | 4 (5.00) | ||
| Smoking history | 0.057 | 0.811 | ||
| Yes | 15 (17.65) | 13 (16.25) | ||
| No | 70 (82.35) | 67 (83.75) | ||
| Drinking history | 0.067 | 0.796 | ||
| Yes | 26 (30.59) | 23 (28.75) | ||
| No | 59 (69.41) | 57 (71.25) |