Table 4 Analysis of the causes of adverse events in the observational and control groups [n (%)]
causes of adverse events [n (%)] | Control group(n = 202) | Observational group(n = 224) | χ2 | P |
|---|---|---|---|---|
Disease-related | 40 (19.80) | 28 (12.5) | 4.222 | 0.040 |
Staff-related | 18 (8.91) | 9 (4.02) | 4.284 | 0.038 |
Equipment-related | 6 (2.97) | 0 | 4.779# | 0.029 |
Environment-related | 12 (5.94) | 4 (1.79) | 5.073 | 0.024 |