Subgroup analysis
Stratified by age
The cumulative livebirth rate stratified by age between the groups was shown in Figure 2. In women aged 20 - 33 years old, the cumulative livebirth rate of the salpingectomy group was significantly higher than the neosalpingostomy group (Figure 2-C, p<0.001), while in women aged 34 - 45 years old, the difference did not reach statistical significance (Figure 2-D, p = 0.373).