Table 6 Univariate and adjusted Cox regression analysis for teeth exfoliation (n = 125)
Variable | Total n (%) | HR Univariate† 95% CI‡ | p value | HR Adjusted† 95% CI‡ | p value |
|---|---|---|---|---|---|
Group | |||||
ART (ref) | 60 (92.3) | ||||
Hall Technique | 65 (98.5) | 1.60 1.05–2.45 | 0.030* | 1.84 1.19–2.87 | 0.007* |
Age (years) | |||||
5–6.9 (ref) | 21 (87.5) | ||||
7–8.9 | 73 (93.3) | 7.75 2.79–21.5 | < 0.001* | 8.89 3.17–24.88 | < 0.001* |
≥ 9 | 31 (96.9) | 12.62 4.36–36.51 | < 0.001* | 17.08 5.76–50.62 | < 0.001* |
Sex | |||||
Male (ref) | 75 (93.8) | ||||
Female | 50 (98) | 0.83 0.54–1.29 | 0.409 | ||
Jaw | |||||
Upper (ref) | 76 (96.2) | ||||
Lower | 49 (94.2) | 1.00 0.65–1.53 | 0.994 | ||
Side | |||||
Right (ref) | 66 (94.3) | ||||
Left | 59 (96.7) | 0.83 0.55–1.27 | 0.404 | ||
Tooth | |||||
1st primary molar (ref) | 76 (92.7) | ||||
2nd primary molar | 49 (100) | 0.75 0.48–1.15 | 0.188 | 0.64 0.41–0.99 | 0.047* |