| Term | VIF | VIF 95%CI (low) | VIF 95%CI (high) | SE factor | Tolerance | Tolerance95% CI (low) | Tolerance95% CI (high) | | CTI | 1.01 | 0.95 | 1.10 | 1.00 | 0.99 | 0.91 | 1.05 | | Joint disease | 1.03 | 0.96 | 1.12 | 1.02 | 0.97 | 0.89 | 1.04 | | Education level | 1.05 | 0.97 | 1.15 | 1.02 | 0.95 | 0.87 | 1.03 | | Smoking status | 1.41 | 1.20 | 1.65 | 1.19 | 0.71 | 0.61 | 0.83 | | Asthma | 1.01 | 0.94 | 1.10 | 1.00 | 0.99 | 0.91 | 1.06 | | Marital status | 1.05 | 0.96 | 1.16 | 1.02 | 0.96 | 0.86 | 1.04 | | Residence | 1.04 | 0.95 | 1.14 | 1.02 | 0.97 | 0.88 | 1.05 | | Age | 1.10 | 1.00 | 1.25 | 1.05 | 0.91 | 0.80 | 1.00 | | Sex | 1.55 | 1.30 | 1.85 | 1.24 | 0.65 | 0.54 | 0.77 | | Liver disease | 1.01 | 0.94 | 1.11 | 1.00 | 0.99 | 0.90 | 1.06 | | Kidney disease | 1.01 | 0.94 | 1.11 | 1.00 | 0.99 | 0.90 | 1.06 | | Gastrointestinal disease | 1.03 | 0.95 | 1.14 | 1.01 | 0.97 | 0.88 | 1.05 | | Drinking status | 1.20 | 1.05 | 1.40 | 1.10 | 0.83 | 0.71 | 0.95 | VIF = variance inflation factor; SE factor = √VIF. Generally, VIF < 5 indicates acceptable collinearity, whereas VIF ≥ 10 suggests severe multicollinearity.
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