Table 1 Multiple general linear regressions of demographic characteristics on periodontitis clinical parameters in patients with periodontal disease
From: Associations between the phenotype and genotype of MnSOD and catalase in periodontal disease
|  | Plaque index (%) | Bleeding on probing (%) | Percentage of PDs of 4~9 mm (%) | Mean PD (mm) | ||||
|---|---|---|---|---|---|---|---|---|
Baseline | After treatment | Baseline | After treatment | Baseline | After treatment | Baseline | After treatment | |
β (SE) | β (SE) | β (SE) | β (SE) | |||||
Gender | ||||||||
 Male vs. Female | −0.21 (3.40) | 3.44 (2.98) | 5.55 (3.78) | 3.46 (2.92) | 2.35 (2.64) | 1.00 (1.73) | 0.06 (0.09) | 0.04 (0.06) |
Years of schooling | ||||||||
  > 12 vs. ≤12 | 0.67 (2.88) | −0.15 (2.52) | −8.66 (3.20)** | −2.97 (2.47) | −4.43 (2.23)* | −1.46 (1.46) | −0.15 (0.08) | − 0.03 (0.05) |
Smoking status | ||||||||
 Current and quit vs. Never | −3.16 (3.70) | −2.73 (3.24) | −9.55 (4.12)* | −1.00 (3.18) | 1.57 (2.87) | 3.35 (1.88) | 0.01 (0.10) | 0.11 (0.07) |
Alcohol consumption | ||||||||
 Current and quit vs. Never | 4.09 (3.54) | −0.18 (3.10) | 0.42 (0.91) | −0.68 (3.04) | −1.11 (2.75) | −1.47 (1.80) | 0.01 (0.09) | −0.05 (0.06) |