Table 6.
Bivariate and multivariate logistic regression between independent variables and treatment failure (n = 154).
| Independent variables | Level | n | Bivariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|---|---|
| OR | CI 95% | p | OR | CI 95% | p | |||
| Teeth group | Single-rooted (reference) | 113 | 1.00 | — | — | 1.00 | — | — |
| Two-rooted | 41 | 0.58 | 0.24–1.40 | 0.232 | 0.54 | 0.20–1.43 | 0.221 | |
|
| ||||||||
| Quality of root-filled canal |
“Perfect” (reference) | 64 | 1.00 | — | — | 1.00 | — | — |
| Satisfactory | 71 | 0.80 | 0.37–1.73 | 0.580 | 0.69 | 0.29–1.64 | 0.405 | |
| Poor | 19 | 1.08 | 0.62–1.89 | 0.771 | 1.31 | 0.67–2.53 | 0.420 | |
|
| ||||||||
| Quality of coronal restorations | Adequate (reference) | 48 | 1.00 | — | — | 1.00 | — | — |
| Inadequate | 81 | 1.17 | 0.51–2.71 | 0.702 | 0.80 | 0.29–2.19 | 0.668 | |
|
| ||||||||
| Carious lesion | Absent (reference) | 109 | 1.00 | — | — | 1.00 | — | — |
| Present | 45 | 2.89 | 1.35–6.14 | 0.006 ∗ | 2.97 | 1.21–7.28 | 0.017 ∗ | |
|
| ||||||||
| Bleeding on probing | Absent (reference) | 105 | 1.00 | — | — | 1.00 | — | — |
| Present | 49 | 2.38 | 1.13–5.02 | 0.021 ∗ | 2.45 | 1.02–5.84 | 0.043 ∗ | |
|
| ||||||||
| Tooth mobility | Absent (reference) | 136 | 1.00 | — | — | 1.00 | — | — |
| Present | 18 | 3.25 | 1.18–8.88 | 0.022 ∗ | 4.23 | 1.23–14.51 | 0.022 ∗ | |
|
| ||||||||
| Periodontal disease | Absent (reference) | 120 | 1.00 | — | — | 1.00 | — | — |
| Present | 34 | 0.81 | 0.33–1.97 | 0.644 | 0.34 | 0.10–1.11 | 0.076 | |
Note. Statistical significance; OR, Odds Ratio; CI, confidence interval.