Epidemiology and Risk Factors of Tooth Loss among Iranian Adults: Findings from a Large Community-Based Study
Table 3
Crude and adjusted odds ratios and 95% confidence intervals for the independent potential risk factors of tooth loss based on multinomial logistic regression analysis.
Tooth loss status*
0
<6
≥6
Crude OR (95% CI)
P value
Adjusted OR (95% CI)
P value
Crude OR (95% CI)
P value
Adjusted OR (95% CI)
P value
Crude OR (95% CI)
P value
Adjusted OR (95% CI)
P value
Age
0.79 (0.76–0.82)
<0.001
0.803 (0.781–0.827)
<0.0001
0.85 (0.82–0.88)
<0.001
0.865 (0.841–0.889)
<0.0001
0.94 (0.91–0.97)
<0.0001
0.944 (0.918–0.972)
<0.0001
Smoking
Former Nonsmoker Smoker (ref)
2.68 (1.41–5.06) 6.7 (4.1–10.9)
0.002 <0.0001
2.19 (1.01–4.7) 12.8 (6.78–24.16)
0.046 <0.0001
2.91 (1.82–4.66) 21.7 (15.02–31.35)
<0.0001 <0.0001
2.48 (1.41–4.36) 9.14 (5.6–14.92)
<0.0001 <0.0001
2.03 (1.21–3.42) 3.6 (2.4–5.41)
0.007 <0.0001
2.273 (1.25–4.11) 3.35 (1.98–5.68)
0.0007 <0.0001
Education
Diploma and lower Bachelor Master and doctorate (ref)
0.03 (0.008–0.129) 0.54 (0.12–2.32)
<0.0001 0.409
0.024 (0.006–0.102) 0.195 (0.043–0.891)
<0.0001 0.035
0.083 (0.021–0.338) 0.65 (0.151–2.78)
0.001 0.560
0.087 (0.02–0.365) 0.370 (0.082–1.678)
<0.0001 0.197
0.43 (0.091–1.958) 0.89 (0.188–4.28)
0.279 0.888
0.509 (0.108–2.399) 0.795 (0.156–4.03)
0.393 0.782
Sex
Male Female (ref)
0.07 (0.048–0.609)
<0.0001
0.439 (0.252–0.764)
0.004
0.13 (0.088–0.199)
<0.0001
0.597 (0.347–1.029)
0.063
0.34 (0.218–0.529)
<0.0001
0.891 (0.498–1.594)
0.697
Metabolic abnormality (ref: yes)
3.38 (2.41–4.73)
<0.0001
1.18 (0.77–1.82)
0.45
1.93 (1.40–2.67)
<0.0001
1.17 (0.78–1.75)
0.46
1.18 (0.82–1.70)
0.37
1.07 (0.69–1.65)
0.77
Dependent variable in multinomial logistic regression with four categories; edentulism was considered as reference category. Ref: reference category; OR: odd ratio; 95% CI: 95% confidence interval.
