Table 4 Sensitivity analysis of influencing factors

Cesarean delivery

0.450 (0.378–0.535)

0.416 (0.282–0.613)

Vaginal delivery

1.024 (1.016–1.032)

3.085 (2.163–4.398)

Age (≥ 35 years old)

1.085 (1.063–1.108)

1.493 (1.274–1.750)

Multiparity (number of deliveries ≥ 2)

1.497 (1.315–1.703)

1.736 (1.357–2.222)

Neonatal weight > 4 kg

1.824 (1.604–2.074)

2.142 (1.688–2.717)

Lateral episiotomy

1.811 (1.359–2.413)

1.811 (1.359–2.413)

Antecedent history of UI pathology

2.215 (2.141–2.290)

3.651 (2.488–5.358)

Augmented pre-pregnancy BMI ≥ 24 kg/m²

1.099 (1.053–1.146)

1.657 (1.294–2.123)

Perineal deviation

1.446 (1.335–1.566)

1.664 (1.277–2.168)

Instrumental parturition

1.370 (1.349–1.390)

1.791 (1.133–2.832)

Pelvic surgical theater

1.294 (1.097–1.526)

1.379 (1.003–1.897)

Prolonged second stage of labor

2.449 (1.761–3.407)

2.413 (1.917–3.407)