Table 3

Estimates of ICER of UPA versus LNG in EHC

	UPA		LNG		ICER*
	Pregnancy rate (%)	All costs†	Pregnancy rate (%)	All costs†	ICER*
1. All healthcare costs of unintended pregnancy=£1663	1.4	£50.23	2.2	£51.79	−£194
2. Health and social cost of unintended pregnancy=£2922	1.4	£67.86	2.2	£79.48	−£1453
3. Pregnancy rate within 24 h of UPSI (with healthcare cost of unintended pregnancy=£1663)	0.9	£41.92	2.5	£56.78	−£929
4. Pregnancy rate within 24 h of UPSI (health and social care costs=£2922)	0.9	£53.25	2.5	£88.25	−£2188

*ICER is the difference in total costs divided by the difference in pregnancy rate.
†All costs are the drug cost (£16.95 for UPA and £5.20 for LNG)8+£10 pharmacy consultation+cost of pregnancy in EHC failures (pregnancy rate×cost of unintended pregnancy).
EHC, emergency hormonal contraception; ICER, incremental cost-effectiveness ratio; LNG, levonorgestrel; UPA, ulipristal acetate.