Table 3 Multiple logistic regression analysis demonstrating association between blood lead level and hyperuricemia * in four models
Variables | Odds ratio (95% confidence interval) | |||
|---|---|---|---|---|
Model 1 | Model 2 | Model 3 | Model 4 | |
Tertile group (blood lead, μg/dL) |  |  |  |  |
I (< 2.61) | 1.000 | 1.000 | 1.000 | 1.000 |
II (2.61 ~ 4.50) | 1.676 (1.091 ~ 2.576) | 1.971 (1.258 ~ 3.087) | 1.902 (1.211 ~ 2.989) | 1.763 (1.116 ~ 2.784) |
III (>4.50) | 1.890 (1.236 ~ 2.889) | 2.286 (1.460 ~ 3.579) | 2.182 (1.389 ~ 3.430) | 1.982 (1.254 ~ 3.132) |
Age (years) |  | 0.951 (0.934 ~ 0.967) | 0.943 (0.924 ~ 0.962) | 0.945 (0.925 ~ 0.965) |
Body mass index (kg/m2) |  | 1.098 (1.031 ~ 1.168) | 1.099 (1.033 ~ 1.170) | 1.096 (1.030 ~ 1.168) |
γ-GTP (IU/L) |  | 1.006 (1.003 ~ 1.010) | 1.005 (1.002 ~ 1.009) | 1.005 (1.002 ~ 1.009) |
Smoking (pack-year) |  |  | 1.017 (0.999 ~ 1.035) | 1.020 (1.002 ~ 1.039) |
Drinking (days/week) |  |  | 1.076 (0.944 ~ 1.226) | 1.085 (0.951 ~ 1.238) |
Exercise (days/week) |  |  | 0.950 (0.853 ~ 1.058) | 0.938 (0.841 ~ 1.046) |
Serum creatinine (mg/dL) |  |  |  | 16.877 (3.388 ~ 84.073) |