Establishment and validation of a simple nomogram for predicting early postpartum stress urinary incontinence among women with vaginal delivery: a retrospective study

Table 2 Multivariable analysis of the training cohort

Variables	Multivariate analysis		Selected factors for model
Variables	OR (95% CI)	P value	OR (95% CI)	P value
Age	1.17 (1.09–1.25)	< 0.001	1.14 (1.09–1.19)	< 0.001
Pre-pregnancy BMI, kg/m²	0.97 (0.92–1.03)	0.371
Parity
1	1 [Reference]
≥ 2	5.95 (4.07–8.80)	< 0.001	5.60 (4.07–7.79)	< 0.001
Diabetes (gestational/pregestational)
No	1 [Reference]
Yes	0.97 (0.68–1.37)	0.862
Hypertensive disorders
No	1 [Reference]
Yes	0.84 (0.45–1.48)	0.561
Gestational age, week	0.98 (0.86–1.12)	0.787
Infant weight, g	1.00 (1.00–1.00)	0.141	1.00 (1.00–1.00)	0.055
Epidural anesthesia
No	1 [Reference]
Yes	1.16 (0.88–1.53)	0.297
Second stage of labor, min	1.02 (1.01–1.03)	< 0.001	1.02 (1.01–1.03)	< 0.001
Forceps delivery
No	1 [Reference]
Yes	6.41 (3.53–11.88)	< 0.001	6.08 (3.85–9.56)	< 0.001
Episiotomy
No	1 [Reference]
Yes	0.84 (0.43–1.60)	0.591
Perineal lacerations
None	1 [Reference]
I	0.80 (0.52–1.26)	0.327
II and above	0.94 (0.57–1.57)	0.816

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