| Characteristics |
| Vaginal delivery (%) | Cesarean delivery (%) | χ² | P |
| Province of domicile | Guangxi | 1299 (66.0) | 668 (34.0) | 1.517 | 0.218 |
|
| Others | 40 (74.1) | 14 (25.9) |
|
|
| City of domicile | Liuzhou | 971 (65.3) | 516 (34.7) | 2.296 | 0.130 |
|
| Others | 368 (68.9) | 166 (31.1) |
|
|
| Ethnicity | Han | 787 (65.1) | 421 (34.9) | 1.315 | 0.518 |
|
| Zhuang | 450 (67.8) | 214 (32.2) |
|
|
|
| Others | 92 (66.2) | 47 (33.8) |
|
|
| Age (years)* | ≤30 | 564 (73.8) | 200 (26.2) | 30.687 | <0.001 |
|
| >30 | 793 (61.9) | 489 (38.1) |
|
|
| Education* | Junior high school or below | 159 (58.7) | 112 (41.3) | 13.540 | 0.001 |
|
| Senior high school | 302 (63.0) | 177 (37.0) |
|
|
|
| College or above | 851 (69.1) | 381 (30.9) |
|
|
| Annual household income (CNY) | <10000 | 48 (65.8) | 25 (34.2) | 1.629 | 0.653 |
|
| 10000 - 49999 | 330 (67.9) | 156 (32.1) |
|
|
|
| 50000 - 99999 | 741 (66.5) | 373 (33.5) |
|
|
|
| ≥100000 | 238 (63.8) | 135 (36.2) |
|
|
| Occupation* | Administrative Staff | 320 (71.9) | 125 (28.1) | 16.664 | 0.005 |
|
| Professional & Skilled Workers | 292 (65.8) | 152 (34.2) |
|
|
|
| Business and service personnel | 345 (63.0) | 203 (37.0) |
|
|
|
| Agricultural personnel | 21 (53.8) | 18 (46.2) |
|
|
|
| Operators | 36 (80.0) | 9 (20.0) |
|
|
|
| Others | 201 (63.4) | 116 (36.6) |
|
|
| Prepregnancy BMI (kg/m2)* | Underweight | 174 (77.0) | 52 (23.0) | 48.013 | <0.001 |
|
| Normal | 892 (69.1) | 399 (30.9) |
|
|
|
| Overweight | 231 (56.5) | 178 (43.5) |
|
|
|
| Obesity | 60 (50.0) | 60 (50.0) |
|
|