Table 2 Computed tomography scan utilization among various Alvarado Score categories
| Overall (n = 160) | Intervention arm (n = 80) | Usual care arm (n = 80) | P value | ||
|---|---|---|---|---|---|
| Overall CT Utilization | 149 (93.1) | 75 (93.7) | 74 (92.5) | 0.999 | |
| CT scans performed stratified by Alvarado Score Category | |||||
| Alvarado Score | Number of patients in intervention arm | Number of CT scans done (%) | Number of patients in usual care arm | Number of CT scans done (%) | |
| 1 to 3 | 3 | 1 (33.3) | 12 | 10 (83.3) | 0.012 |
| 4 | 15 | 15 (100) | 14 | 13 (92.9) | |
| 5 | 24 | 23 (95.8) | 11 | 10 (90.9) | |
| 6 | 15 | 14 (93.3) | 16 | 16 (100) | |
| 7 | 15 | 15 (100) | 11 | 10 (90.9) | |
| 8 | 8 | 7 (87.5) | 12 | 12 (100) | |
| 9 | 0 | 4 | 3 (75) | ||