Table 1.
Comparison of Enrolled Patients to Those Eligible but not Enrolled (Missed)
| Variable | Enrolled patients | Not Enrolled* |
|---|---|---|
| Age in years (mean ± SD) | 10.8 (± 3.8) | 11.6 (± 3.6) |
| Male (n (%)) | 1338 (51%) | 56 (53%) |
| WBC (× 103/µL) (mean ± SD) | 12.8 (±5.7) | 12.3 (±5.3) |
| Duration of symptoms < 24 hours (n (%)) | 1468 (56%) | 48 (45%) |
| Use of abdominal imaging (n (%)) | 2116 (81%) | 99 (93%) |
| Use of CT (n (%)) | 1455 (55%) | 47 (44%) |
| Underwent an operation (n (%)) | 1113 (42%) | 36 (34%) |
| Appendicitis rate (n (%)) | 1018 (39%) | 45 (42%) |
| Total N | 2625 | 106 |
Differences between groups not statistically different
*
Numbers (N/%) obtained from audits of two random days/month. Denominator (not shown) is number of patients eligible on the given days.