Table 1 Demographic characteristics of infertile women undergoing IVF-ET with different cycles
Variables | Total (n = 298) | First-time group (n = 150) | Repeated group (n = 148) | t/χ2 | P |
|---|---|---|---|---|---|
Age (years) | 31.9 ± 4.3 | 31.0 ± 4.4 | 33.0 ± 3.9 | − 4.175 |  < 0.001 |
Marriage age (years) | 5.8 ± 3.9 | 4.8 ± 3.7 | 6.7 ± 3.9 | − 4.165 |  < 0.001 |
Educational level, n (%) | |||||
Junior high school or below | 56(18.8) | 28(18.7) | 28(18.9) | 0.003 | 0.956 |
Senior high school or above | 242(81.2) | 122(81.3) | 120(81.1) | ||
Residence, n (%) | |||||
Rural | 67(24.2) | 36(24.2) | 31(24.2) | 0.118 | 0.731 |
City/town | 210(75.8) | 113(75.8) | 97(75.8) | ||
Occupation, n (%) | |||||
Physical | 60(20.1) | 28(18.7) | 32(21.6) | 0.405 | 0.525 |
Mental | 238(79.9) | 122(81.3) | 116(78.4) | ||
Family monthly income (yuan), n (%) | |||||
 < 5000 | 112(37.6) | 55(36.7) | 57(38.5) | 4.879 | 0.087 |
5000–10,000 | 75(25.2) | 31(20.7) | 44(29.7) | ||
 ≥ 10,000 | 111(37.2) | 64(42.6) | 47(31.8) | ||