| 原因 | 频次 | 所占比例 | 累计百分比 |
| 操作规范性不足 | 10 | 26.32% | 26.32% |
| 质控手段单一 | 8 | 21.05% | 47.37% |
| 培训不足 | 7 | 18.42% | 65.79% |
| 病床擦拭不干净 | 6 | 15.79% | 81.58% |
| 工具不匹配 | 4 | 10.53% | 92.11% |
| 设备供应不足 | 2 | 5.26% | 97.37% |
| 患者自身条件差 | 1 | 2.63% | 100.00% |
| 合计 | 38 | 100% | / |