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Comparison of IAD incidence and severity between the two groups after matching [n (%)].
| Group | n | IAD Occurrence | IAD Severity Classification | |
|---|---|---|---|---|
| Grade 1 (Mild) |
Grade 2 (Moderate to Severe) |
|||
| Control Group | 65 | 32 (49.2) | 20 (62.5) | 12 (37.5) |
| Observation Group | 65 | 20 (30.8) | 16 (80.0) | 4 (20.0) |
| Statistic | χ2χ2 = 4.615 | Z = -2.156 | ||
| P-value | 0.032 | 0.031 | ||
