Table 2.
Adjustment and adjusted data of included studies.
| References | Ethnicity | Type | Genetic models | OR(95%CI) | Adjustment |
|---|---|---|---|---|---|
| (Wohlfahrt et al., 2006) | Caucasian | SCP | AG vs. GG | 1.44 (0.70–2.93) | Gender and smoking |
| AA vs. GG | 1.95 (0.76–4.99) | ||||
| (GA+AA) vs. GG | 0.64 (0.33–1.23) | ||||
| AA vs. (GA+GG) | 0.62 (0.26–1.48) | ||||
| (Ozturk et al., 2010) | 68% Caucasian# | CP | AG vs. GG | 1.27 (0.7–2.3) | Age, gender, ethnicity, and smoking status |
| (Schaefer et al., 2010) | Caucasian | CP | AG vs. GG | 1.1 (0.8–1.7) | Smoking, diabetes, and gender |
| AA vs. GG | 1.0 (0.6–1.7) | ||||
| (GA+AA) vs. GG | 1.1 (0.8–1.6) | ||||
| AA vs. (GA+GG) | 0.9 (0.6–1.5) | ||||
| (Zupin et al., 2017) | Caucasian | SCP | A vs. G | 0.64 (0.41–0.99) | Age, gender, and smoking status |
#
68% Caucasians, 27% African Americans, and the remaining composed of other groups; CP, Chronic periodontitis; SCP, Severe chronic periodontitis; OR, Odds ratio; CI, Confidence interval.