Table 5.

Multivariable Predictive Model (white lines) and Internal Validation Model (gray lines) using Table 3 (inclusive of thromboembolic disorder)

Predictor Variable	Adjusted OR (95% CI)	p-value
Mode of delivery (cesarean vs vaginal delivery)	1.90 (1.23 – 2.95)	0.004*
	1.91 (1.84 – 1.99)	<0.001*
BMI (admission) per 5 unit increase	1.25 (1.08 – 1.43)	0.002*
	1.23 (1.21 – 1.24)	<0.001*
Pre-gestational diabetes	3.37 (1.75 – 6.48)	<0.001*
	3.41 (3.21 – 3.61)	<0.001*
Chronic heart disease	3.27 (1.45 – 7.37)	0.004*
	3.25 (3.02 – 3.49)	<0.001*
Preeclampsia	2.03 (1.21 – 3.40)	0.011*
	1.99 (1.90 – 2.09)	<0.001*
Blood transfusion (intrapartum or postpartum)	3.29 (1.74 – 6.22)	<0.001*
	3.30 (3.12 – 3.50)	<0.001*
Prenatal history of thromboembolic disorder	140.00 (85.20 – 232.00)	<0.001*
	141.45 (135.26 – 147.91)	<0.001*
Postpartum maternal length of stay, per 1 day increase	1.06 (1.04 – 1.09)	<0.001*
	1.06 (1.06 – 1.07)	<0.001*

^*p<.05, statistically significant