Table 1 Variable assignment table
From: Risk factors of chronic periodontitis on healing response: a multilevel modelling analysis
Variables | Assignment |
|---|---|
Patient -level | Level 3 |
Age | continuous variable |
Gender | female =1, male =2 |
Smokers | yes = 1, no = 0 |
BMI | continuous variable |
Socio-economic | More than 599.60 USD = 1, 299.76–599.60 USD =2, 149.88–299.76 USD = 3, 74.94–149.88 USD =4, less than 74.94 USD = 5 |
Education background | post graduation =1, graduate =2, senior school or below =3 |
Stress-experience | yes = 1,no = 0 |
Number of missing teeth | continuous variable |
% of sites with plaque at baseline | continuous variable |
% of sites with BOP at baseline | continuous variable |
% of sites with PD ≥ 5 mm at baseline | continuous variable |
Tooth-level | Level 2 |
Tooth position | anterior = 1, premolar = 2, molar = 3 |
Mobility | Do not have mobility = 0, mobility ≤ 1 mm = 1, 1 mm < mobility ≤ 2 mm = 2, mobility > 2 mm = 3 |
Site-level | Level 1 |
Plaque at baseline | presence = 1, absence = 0 |
BOP at baseline | presence = 1, absence = 0 |
Surface of tooth | 1 = buccal / lingual, 2 = mesiocclusion/distocclusion |