Table 1.
Demographic characteristics
| UF (n = 105) |
Non-UF (n = 602) |
All patients (n = 707) |
p-value | |
|---|---|---|---|---|
| Age (SD) | 35.6(4.8) | 32.3(4.5) | 32.7(4.8) | < 0.01 |
| Advanced maternal age | 53(50.5%) | 161(26.7%) | 214(30.3%) | < 0.01 |
| BMI (SD) | 26.4(4.0) | 23.5(3.9) | 23.9(4.1) | < 0.01 |
| Living location (Guangzhou) | 96(91.4%) | 547(90.9%) | 643(90.9%) | 0.85 |
| Gravidity (SD) | 2.4(1.2) | 2.1(1.1) | 2.2(1.1) | 0.03 |
| Parity (SD) | 0.6 (0.5) | 0.5(0.5) | 0.5(0.5) | 0.57 |
| Abortion (SD) | 0.8(0.9) | 0.6(0.8) | 0.6(0.9) | 0.01 |
| Smoking | 0(0.0%) | 0(0.0%) | 0(0.0%) | – |
| Partner Smoking | 24(22.9%) | 85(14.1%) | 109(15.4%) | 0.02 |
| Partner Alcoholics | 14(13.3%) | 43(7.1%) | 57(8.1%) | 0.03 |
| Multipara | 5(4.8%) | 101(16.8%) | 106(15.0%) | < 0.01 |
| Surgical history | 26(24.8%) | 149(24.8%) | 175(24.8%) | 1.00 |
| Uterine scar | 33(31.4%) | 131(21.8%) | 164(23.2%) | 0.03 |
| Hepatitis B | 1(1.0%) | 14(2.3%) | 15(2.1%) | 0.37 |
| Heart disease | 1(1.0%) | 5(0.8%) | 6(0.9%) | 0.90 |
UF Uterine fibroids, BMI Body mass index. Bold represented p value < 0.05. Data with SD indicates “mean” value. Data without SD indicates “number”