Table 3.
The correlation between the demographic data, clinical or radiographic findings and the incidence of pre-operative percussion tenderness or fistula
| Variable | Statistical test | Pre-operative percussion tenderness | Pre-operative fistula |
|---|---|---|---|
| Gender | Pearson Chi-square | 0.190 | 0.164 |
| Age | Pearson Chi-square | 0.096 | 0.135 |
| Tooth type | Pearson Chi-square | 0.836 | 0.6001 |
| Pre-operative fistula | Pearson Chi-square | 0.118 | / |
| Dental arch | Pearson Chi-square | 0.026 | 0.194 |
| Palpation | Pearson Chi-square | 0.009 | 0.009 |
| Tooth mobility | Pearson Chi-square | 0.108 | 0.20 |
| Swelling | Pearson Chi-square | 0.197 | 0.051 |
| Periodontal health | Pearson Chi-square | 0.024 | 0.002 |
| Periapical index (PAI) | Pearson Chi-square | 0.012 | <0.001 |
| ATP value before final irrigation (Sample A) | Mann Whitney U | 0.001 | <0.001 |