Logistic regression univariate analysis of the likelihood of 48-hour review depending on category of C-reactive protein test result
| Category | 48-hour review, n/total n | Odds ratio | 95% confidence interval | p value |
|---|---|---|---|---|
| CRP >100 mg/L | 37/53 | 1 | n/a | n/a |
| CRP 21–100 mg/L | 23/52 | 0.34 | 0.15–0.76 | 0.009 |
| CRP ≤20 mg/L | 13/26 | 0.43 | 0.16–1.14 | 0.089 |
| No CRP test | 1/8 | 0.06 | 0.07–0.54 | 0.012 |
| Total | 74/139 | n/a | n/a | n/a |
CRP = C-reactive protein.