Table 3.

Utility and QALY Estimates by Mode of Delivery or Outcome

	Disutility	Disutility Days		QALY
Mode of Delivery/Outcome	Baseline	Baseline	Range	Baseline	Range	Reference
ERCD	0.45	21	14–180	27.140	26.944–27.149	3
Uterine rupture	0.49	21	14–180	27.138	26.925–27.147	3
Failed TOLAC*	0.47	21	14–180	27.139	26.934–27.148	3
Successful TOLAC	0.35	7	2–42	27.160	27.126–27.164	3
Hysterectomy†	0.49	21	14–180	24.355	22.724–25.894	3, 25
Cerebral palsy‡	0.44	All	All	14.840	10.336–19.611	26
HIE	0.75	42	14–180	30.824	30.787–30.901	Assumed
Infant§	n/a	n/a	n/a	30.910	7.728–23.183	Assumed

QALY, quality adjusted life-years; ERCD, elective repeat cesarean delivery; TOLAC, trial of labor after a previous cesarean; HIE, hypoxic ischemic encephalopathy; n/a, not applicable

^*Extrapolated from Chung et al., midway between ERCD and rupture³;

^†Blend of Harris et al. and Chung et al. at 55% and 45% respectively to represent the proportion of women with a hysterectomy that would and would not have desired another pregnancy^{3, 25} For Chung et al. assumed the disutility and disutility days in the Table and from Harris et al. disutilities of 0.31 (0.14–0.48) until age 50;

^‡Disutility range for cerebral palsy of 0.26–0.61;

^§Baseline utility of 1 for all infants without cerebral palsy or HIE, with a range of (0.25–1) tested in sensitivity analysis.