Table 5.
Demographic and habitual factors of periodontal disease among adult population in Tamil Nadu, India, 2021 by using simple and multiple logistic regression analyses (n = 288).
| Variable | Simple Logistic Regression | Multiple Logistic Regression a | ||||
|---|---|---|---|---|---|---|
| Regression Coefficient (b) | Crude Odds Ratio (95% CI) | p-Value | Regression Coefficient (b) | Adjusted Odds Ratio (95% CI) | p-Value | |
| Ethnicity | ||||||
| Tamil | 0 | 1 | 0 | 1 | ||
| Other than Tamil | 1.55 | 4.69 (1.90–13.29) | 0.002 | 1.8 | 6.07 (2.27–18.37) | <0.001 |
| Age | ||||||
| 18–24 years | 0 | 1 | 0 | 1 | ||
| 25–34 years | 1.09 | 2.98 (1.47–6.18) | 0.003 | 1.28 | 3.56 (1.69–7.85) | 0.001 |
| 35–44 years | 0.29 | 1.33 (0.67–2.67) | 0.41 | 0.26 | 1.30 (0.63–2.73) | 0.480 |
| ≥45 years | 0.85 | 2.33 (1.17–4.75) | 0.02 | 0.86 | 2.37 (5.21–11.10) | 0.029 |
| Smoking | ||||||
| Smoked | 0 | 1 | 0 | 1 | ||
| Did not smoke | −0.97 | 0.38 (0.19–0.75) | 0.006 | −1.12 | 0.33 (0.15–0.67) | 0.003 |
| Alcohol | ||||||
| Consumed | 0 | 1 | 0 | 1 | ||
| Did not consume | −0.83 | 0.44 (0.21–0.89) | 0.02 | −0.98 | 0.31 (0.13–0.64) | 0.002 |
a Forward Stepwise Likelihood Ratio Multiple Logistic Regression model was applied. Multicollinearity and interactions were checked and not detected. Hosmer–Lemeshow Goodness of fit test (p = 0.9136) and area under ROC curve (71.4%) were applied to check the fit of the model.