Table 4

Length of stay, estimated cost, QALY gain and cost/QALY by age group

	N	Length of stay/day		Estimated cost/£		QALY gain		Cost/QALY
	N	Mean	SD	Median	IQR	Mean	95% CI	Mean	95% CI^*
23–49 years	82	9.5	3.0	4776	4356–5767	0.95	0.77 to 1.13	5545	4646 to 6861
50–59 years	149	9.4	5.4	4720	4356–5084	0.87	0.76 to 0.98	5902	5140 to 6824
60–64 years	126	10.3	5.1	4981	4391–5767	0.77	0.65 to 0.88	7410	6266 to 8986
65–69 years	190	9.6	2.8	4981	4588–5654	0.88	0.79 to 0.97	5937	5354 to 6631
70–74 years	162	10.5	4.8	5084	4588–5812	0.72	0.63 to 0.81	7944	6940 to 9234
75–90 years	229	13.7	12.1	5654	4812–6904	0.71	0.63 to 0.80	9570	8174 to 11300

↵* Bootstrapped, bias-corrected CI, based on 10 000 bootstrap replications.
QALY, quality-adjusted life year.