Table 2. Primary and secondary clinical and economic outcomes.
| Clinical and economic outcomes | EIA (n = 79) | PCR (n = 87) | P |
| Duration of antibiotic therapy in days, mean (CI) | 2.31 (1.48-3.15) | 0.88 (0.45-1.33) | .007 |
| Diagnostic test performed per patient, mean (CI) | 2.73 (2.64-2.83) | 1.16 (1.04-1.28) | <.001 |
| Duration of contact isolation in days, mean (CI) | 1.46 (0.61-2.32) | 0.62 (0.08-1.32) | .131 |
| Total treatment cost per patienta (CI) | 69.54 (43.36-95.73) | 65.97 (46.61-85.34) | .828 |
| Diagnostic test costa (CI) | 13.67 (13.08-14.26) | 37.15 (32.51-41.79) | <.001 |
| Antibiotic therapy costa (CI) | 36.95 (12.70-61.20) | 20.64 (5.08-36.20) | .262 |
| Contact isolation costa (CI) | 19.39 (8.07-30.71) | 8.19 (1.14-17.52) | .131 |
Note: CI = 95% confidence interval; EIA = enzyme immunoassay; PCR = polymerase chain reaction.
a
Costs are reported in US dollars.