Table 3. Complete-case cost-effectiveness analysis (mean cost in £ / mean QALY, 95% CI).
| Intervention (127 patients) | Standard care (127 patients) | Incremental cost / QALYs gained | |
|---|---|---|---|
| The cost of care a | 4114 (3417, 4956) | 4085 (3145, 5297) | 29 (-1386, 1333) |
| The cost of care—adjusted b | 4139 (4004, 4289) | 4103 (3969, 4252) | 36 (-159, 232) |
| The intervention cost | 199 (178, 217) | 0 | 199 (178, 217) |
| Total cost (care cost + intervention cost) | 4312 (3612, 5153) | 4085 (3145, 5297) | 228 (-1203, 1527) |
| Total cost—adjusted (care cost adjusted + intervention cost) | 4338 (4187, 4490) | 4103 (3957, 4249) | 235 (21, 445) |
| QALYs gained | 0.120 (0.108, 0.133) | 0.117 (0.105, 0.129) | 0.004 (-0.012, 0.020) |
| QALYs gained—adjusted c | 0.125 (0.120, 0.131) | 0.123 (0.117, 0.129) | 0.002 (-0.006, 0.011) |
| ICER | £63 559/QALY | ||
| ICER adjusted | £116 326/QALY d |
aInpatient, day-case and outpatient cost data were collected for both locations, Nottingham and Leicester.
bAdjusted by age, sex, hospital location (Leicester), and baseline utility, permanent care home residence, Charlson co-morbidity (scores 2–3 and ≥4), and higher risk of future health problems at admission (≥4 on Identification of Senior at Risk (ISAR) tool). A GLM model (family—gamma, link—0.45) was applied.
cOLS was applied (adjustment covariates as above, except care home residence at baseline).
dFrom CEAC (Fig 1) we know that 95% CI for ICER is £13,900-∞.