| Explanatory Variables | Comparison Content | Crude Odds Ratio | P Value |
|---|---|---|---|
| Number of Teeth (Number of Teeth Lost Due to Periodontal Disease) | |||
| Number of missing teeth | Missing teeth increases by one tooth (52 teeth lost at initial examination) | 1.375 | <0.0001 |
| Bone mass | Normal/low | 13.97 | 0.0004 |
| 418(2)/286(18) | |||
| Antiepileptic drugs | Use/unuse | 3.762 | 0.0043 |
| 208(12)/496(8) | |||
| BMI | 25 /<25 | 2.538 | 0.0443 |
| 266(12)/438(8) | |||
| Age | 35 /<35 | 2.944 | 0.0557 |
| 410(16)/294(4) | |||
| Number of years elapsed | Missing teeth increases by one year (10.1 ± 7.9 (mean ± SD)) | 1.007 | 0.8081 |
| Living circumstance | institute/home | 6.90 | <0.0001 |
| 158(13)/544(7) | |||
| Tooth brushing | assisted/unassisted | 1.66 | 0.34 |
| 583(15)/119(5) | |||
| BOP % | Missing teeth increases by one percent change of BOP (50.7 ± 39.2 (mean ± SD)) | 1.028 | 0.0013 |