Table 2 Tabulation of department workload by radiological investigations performed plus total number of investigations, and number of films used in IVU investigations.
From: Management of acute renal colic in the UK: a questionnaire survey
| Â | Number of new patients per year | Â | Â | |||
|---|---|---|---|---|---|---|
| Â | < 30,000 | 30,000 to 50,000 | 50,000 to 80,000 | >80,000 | All departments | Test statistics |
IVU performed | Â | Â | Â | Â | Â | Â |
   No | 20(71.4%) | 8 (22.9%) | 13 (37.1%) | 3 (37.5%) | 44 (41.5%) | FI = 15.54, df = 3, P = 0.001 |
   Yes | 8 (28.6%) | 27 (77.1%) | 22 (62.9%) | 5 (62.5%) | 62 (58.5%) |  |
USS performed | Â | Â | Â | Â | Â | Â |
   No | 21 (75.0%) | 25 (71.4%) | 17 (48.6%) | 4 (50.0%) | 67 (63.2%) | χ2 = 6.52, df = 3, P = 0.089 |
   Yes | 7 (25.0%) | 10 (28.6%) | 18 (51.4%) | 4 (50.0%) | 39 (36.8%) |  |
CT performed | Â | Â | Â | Â | Â | Â |
   No | 27 (96.4%) | 33 (94.3%) | 32 (91.4%) | 5 (62.5%) | 97 (91.5%) | FI = 6.87, df = 3, P = 0.056 |
   Yes | 1 (3.6%) | 2 (5.7%) | 3 (8.6%) | 3 (37.5%) | 9 (8.5%) |  |
Total number of investigations | Â | Â | Â | Â | Â | Â |
   None | 16 (57.1%) | 6 (17.1%) | 6 (17.1%) | 1 (12.5%) | 29 (27.4%) | FI = 18.85, df = 6, P = 0.003 |
   One | 9 (32.2%) | 21 (60.0%) | 16 (45.7%) | 3 (37.5%) | 49 (46.2%) |  |
   Two or three | 3 (10.7%) | 8 (22.9%) | 13 (37.2%) | 4 (50.0%) | 28 (26.4%) |  |
If IVU, total Number of films | Â | Â | Â | Â | Â | Â |
   n | 8 | 27 | 22 | 5 | 62 | χ2 = 6.68, df = 3, P = 0.083 |
   mean | 3.0 | 2.9 | 2.6 | 1.6 | 2.7 |  |
   standard deviation | 1.14 | 0.97 | 1.05 | 0.89 | 1.10 |  |
   median | 3 | 3 | 3 | 1 | 3 |  |
   lower quartile | 2.0 | 3.0 | 2.0 | 1.0 | 2 |  |
   upper quartile | 4.5 | 3.0 | 3.0 | 2.5 | 3 |  |