Table 3 Comparison of the incidence of adverse events in the two groups
adverse eventsn [n(%)] | Control group(n = 202) | Observational group(n = 224) | χ2/Z | P |
|---|---|---|---|---|
Number of cases of adverse events | 76 (37.62) | 41 (18.30) | 19.854 | <0.001 |
Number of cases of adverse events | 12 (5.94) | 6 (2.68) | −3.007 | 0.003 |
High-risk adverse events | 41 (20.30) | 30 (13.40) | ||
Events with hidden danger | 23 (11.39) | 5 (2.23) |