Table 3. Adjusted logistic regression model predicting odds of treatment by patient characteristics between 2008/09 to 2011/12 academic years at UPDA.
| Outcome (reference category in brackets$) | Predictor variable | Odds ratio | 95% C.I. for Odds ratio | P value | ROC | |
|---|---|---|---|---|---|---|
| Lower | Upper | |||||
| Tooth restoration | Adult payment exemption | 2.108 | 1.576 | 2.819 | 0.01* | 0.6 |
| Age | 1.02 | 1.015 | 1.025 | 0.01* | ||
| (Quintile in PCT (5$) | Quintile in PCT(1) | 1.655 | 1.274 | 2.151 | 0.01* | |
| Quintile in PCT(2) | 1.376 | 1.074 | 1.764 | 0.012* | ||
| Quintile in PCT(3) | 1.145 | 0.904 | 1.449 | 0.262 | ||
| Quintile in PCT(4) | 1.086 | 0.862 | 1.368 | 0.483 | ||
| (Male$) | Sex | 0.832 | 0.712 | 0.971 | 0.02* | |
| (Non-smoker$) | Smoking status | 1.569 | 1.29 | 1.909 | 0.01* | |
| Instruction and advice | Adult payment exemption | 2.198 | 1.506 | 3.207 | 0.001* | 0.7 |
| Age | 1.038 | 1.032 | 1.045 | 0.001* | ||
| (Quintile in PCT (5$) | Quintile in PCT(1) | 0.371 | 0.256 | 0.536 | 0.001* | |
| Quintile in PCT(2) | 0.48 | 0.332 | 0.692 | 0.001* | ||
| Quintile in PCT(3) | 0.54 | 0.376 | 0.776 | 0.001* | ||
| Quintile in PCT(4) | 0.608 | 0.421 | 0.879 | 0.009* | ||
| (Male$) | Sex | 1.192 | 0.993 | 1.43 | 0.059 | |
| (Non-smoker$) | Smoking status | 4.124 | 3.088 | 5.508 | 0.001* | |
| Scale and polish | Adult payment exemption | 1.745 | 1.308 | 2.327 | 0.001* | 0.7 |
| Age | 1.037 | 1.032 | 1.043 | 0.001* | ||
| (Quintile in PCT (5$) | Quintile in PCT(1) | 0.512 | 0.379 | 0.692 | 0.001* | |
| Quintile in PCT(2) | 0.754 | 0.56 | 1.016 | 0.063 | ||
| Quintile in PCT(3) | 0.72 | 0.538 | 0.964 | 0.027* | ||
| Quintile in PCT(4) | 0.818 | 0.608 | 1.101 | 0.185 | ||
| (Male$) | Sex | 1.039 | 0.885 | 1.219 | 0.642 | |
| (Non-smoker$) | Smoking status | 1.737 | 1.421 | 2.124 | 0.001* | |
| Tooth extraction | Adult payment exemption | 1.815 | 1.38 | 2.388 | 0.001* | 0.7 |
| Age | 1.033 | 1.028 | 1.039 | 0.001* | ||
| (Quintile in PCT (5$) | Quintile in PCT(1) | 1.508 | 1.102 | 2.063 | 0.01* | |
| Quintile in PCT(2) | 0.997 | 0.727 | 1.367 | 0.983 | ||
| Quintile in PCT(3) | 0.994 | 0.728 | 1.355 | 0.968 | ||
| Quintile in PCT(4) | 1.002 | 0.731 | 1.374 | 0.989 | ||
| (Male$) | Sex | 0.8 | 0.672 | 0.953 | 0.012* | |
| (Non-smoker$) | Smoking status | 2.03 | 1.663 | 2.477 | 0.001* | |
| Partial denture | Adult payment exemption | 2.604 | 1.758 | 3.856 | 0.0001* | 0.8 |
| Age | 1.075 | 1.065 | 1.085 | 0.0001* | ||
| (Quintile in PCT (5$) | Quintile in PCT(1) | 1.087 | 0.655 | 1.802 | 0.748 | |
| Quintile in PCT(2) | 0.813 | 0.484 | 1.365 | 0.433 | ||
| Quintile in PCT(3) | 0.927 | 0.561 | 1.531 | 0.767 | ||
| Quintile in PCT(4) | 0.704 | 0.412 | 1.205 | 0.201 | ||
| (Male$) | Sex | 0.941 | 0.695 | 1.268 | 0.688 | |
| (Non-smoker$) | Smoking status | 3.142 | 2.277 | 4.337 | 0.0001* | |
Note
n = 2,782
* marks statistically significant differences (p<0.05)
ROC = area under the curve
$ is reference category for categorical variables
Treatments within closed/completed treatment plans