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Assignment table
| Factor | Assignment |
|---|---|
| Average age | Data are continuous variables analyzed using raw data |
| Mean course of disease | Data are continuous variables analyzed using raw data |
| History of smoking | Yes =1, No =0 |
| History of drinking | Yes =1, No =0 |
| Tooth-brushing time | ≥ 2 minutes =1, <2 minutes =0 |
| Chewing-side preference | Yes =1, No =0 |
| Mode of treatment | Implant restoration =1, FPD =0 |
