Table 4 Cost effectiveness results in the ward model of hospitalized community-acquired pneumonia in the elderly according to antibiotic regimen. Increment cost, utility, and cost/utility ratio were estimated relative to adherent as the base comparator
| Â | Adherent | Over-Treated | Under-Treated |
|---|---|---|---|
Cost ($) | 10,156 (4665 – 17,585) | 11,535 (5339 – 20,179) | 10,954 (5159-19,190) |
Incremental Cost ($) |  | +1379 (−8418 – 11,448) | +799 (−8875 – 10,940) |
Utility | 11.2 (8.9 – 12.5) | 10.1 (7.2 – 12.1) | 10.5 (7.9 – 12.1) |
Incremental Utility |  | −1.0 (−4.2−1.9) | −0.7 (−3.6–2.0) |