Numbers of opreations, event rates, and use of hands-free technique overall and in various categories of surgery
| Number of operations | Number (%) of events* | Use (%) of hands-free technique | |
|---|---|---|---|
| *All reported percutaneous injuries, contaminations, and glove tears were used. There were 144 events but the proportion of hands-free use was recorded for only 143. | |||
| 687 | 8 (1.2%) | 100% | |
| 825 | 25 (3.0%) | 75% | |
| 1311 | 81 (6.2%) | 50% | |
| 458 | 8 (3.9%) | 25% | |
| 274 | 11 (4.0%) | 0% | |
| Overall | |||
| Number | 3765 | 143 (3.8%) | (42.0%) |
| Surgical specialty | |||
| General | 992 | 33 (3.3%) | (48.0%) |
| Other | 975 | 20 (2.1%) | (48.0%) |
| Orthopaedic | 1156 | 14 (1.2%) | (42.0%) |
| Cardiothoracic and cerebrovascular | 639 | 77 (12.1%) | (22.0%) |
| Number of personnel in operating theatre | |||
| 1–5 | 2271 | 47 (2.1%) | (47.0%) |
| More than 5 | 1494 | 97 (6.5%) | (34.0%) |
| Duration of surgery | |||
| 1 hour or less | 1499 | 7 (0.5%) | (47.0%) |
| 1–2 hours | 1261 | 37 (2.9%) | (45.0%) |
| More than 2 hours | 995 | 100 (10.1%) | (30.0%) |
| Blood loss | |||
| 100 ml or less | 2350 | 34 (1.4%) | (46.0%) |
| Greater than 100 ml | 1391 | 109 (7.8%) | (36.0%) |
| Shift | |||
| Days | 2989 | 126 (4.2%) | (45.0%) |
| Evenings/nights | 776 | 18 (2.3%) | (31.0%) |
| Emergency | |||
| Yes | 352 | 4 (3.9%) | (32.0%) |
| No | 3334 | 127 (3.8%) | (43.0%) |
| Noise level (judged by circulating nurse) | |||
| Quiet | 1597 | 58 (3.6%) | (45.0%) |
| Noisier | 2032 | 83 (4.1%) | (39.0%) |