Prolonged operative time of repeat cesarean is a risk marker for post-operative maternal complications

Table 2 Post-operative maternal complications distributed by length of surgery, univariate and multivariate analysis^a

	Univariate analysis (chi square)			Multivariate analysis (Adjusted Odds Ratio)
	> 90th percentile	> 90th percentile	p value	aOR	95% CI
Post-operative blood transfusion	82 (1.5%)	47 (4.4%)	< 0.000	3.16	2.17–4.61
Prolonged length of hospitalization (≥ 7 days)	216 (4%)	89 (8.4%)	< 0.000	1.89	1.44–2.46
Rx with antibiotics^b	393 (7.2%)	128 (12%)	< 0.000	1.59	1.28–1.98
Re- admission	42 (0.8%)	18 (1.8%)	0.004	1.94	1.10–3.44
Composite complication^c	607 (11.2%)	215 (20.2%)	< 0.000	1.81	1.52–2.16

^amultivariate analysis controlling for maternal age, ethnicity, parity, number of fetus, gestational age at delivery, urge of operation, anesthesia and number of cesarean delivery
^bRx with either Gentamycin, Augmentin, Ciprofloxacin, Cefazolin
^ccombining post-operative blood transfusion, prolonged length of hospitalization, treatment with antibiotics and readmission

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