TABLE 5.
Regression model with dependent variable root development stage at dismissal
| Coefficients a | ||||||
|---|---|---|---|---|---|---|
| Model | Unstandardized coefficients | 95% Confidence interval for B | ||||
| B | Std. Error | Sig. | Lower bound | Upper bound | ||
| 1 | (Constant) | 2.479 | 0.770 | .002 | 0.930 | 4.027 |
| Age in years | −0.006 | 0.029 | .837 | −0.065 | 0.053 | |
| Root development stage entry | 0.649 | 0.108 | .000*** | 0.431 | 0.867 | |
| Trauma to soft tissues | −0.120 | 0.052 | .026* | −0.225 | −0.015 | |
| Trauma to hard tissues | 0.088 | 0.088 | .324 | −0.089 | 0.264 | |
| Pre‐op width | −0.001 | 0.000 | .009** | −0.001 | 0.000 | |
| PAI index pre‐op | −0.073 | 0.072 | .315 | −0.217 | 0.072 | |
| Root resorption entry | −0.044 | 0.186 | .813 | −0.419 | 0.330 | |
The independent variables age (in years), root development stage at entry, pre‐operative width of dentinal walls (in mm), and pre‐operative PAI index (scale 1–5) were entered as a continuous variable. The independent variables root resorption and trauma to soft‐ and hard tissue were entered as categorical variables. The categories presence of pre‐operative inflammatory root resorption and soft tissue trauma were chosen as reference categories. Variables with statistical significance: ***p = .0001‐root development stage entry; **p = .01‐pre‐op width; *p = .05‐trauma to soft tissues.
a
Dependent variable: root development stage at dismissal.