Table 5. Logistic regression analysis for the occurrence of hypertension and related factors (Hg concentration 15 μg/L).
| Related factors | All subjects | PSM subjects | |||
|---|---|---|---|---|---|
| OR (95% CI) | p-value | OR (95% CI) | p-value | ||
| Hg concentration (ref ≥ 15) | 1.426 (1.066–1.908) | 0.017 | 1.450 (1.026–2.049) | 0.035 | |
| Sex (ref = male) | 0.947 (0.831–1.079) | 0.416 | 0.980 (0.673–1.428) | 0.918 | |
| Age | 1.037 (1.032–1.042) | 0.000 | 1.037 (1.019–1.056) | 0.000 | |
| Smoking (ref = current) | 0.465 | 0.432 | |||
| Ex | 0.984 (0.814–1.190) | 0.942 | 1.335 (0.750–2.377) | 0.326 | |
| Non | 1.062 (0.895–1.261) | 0.367 | 1.017 (0.599–1.728) | 0.949 | |
| Alcohol drink (ref = 0) | 0.987 (0.879–1.108) | 0.959 | 1.130 (0.804–1.590) | 0.481 | |
| Income (ref = 1) | 0.002 | 0.742 | |||
| 2 | 1.000 (0.868–1.151) | 0.897 | 1.254 (0.810–1.942) | 0.311 | |
| 3 | 0.774 (0.656–0.914) | 0.002 | 1.142 (0.702–1.855) | 0.593 | |
| 4 | 0.764 (0.622–0.939) | 0.008 | 1.017 (0.564–1.833) | 0.955 | |
Alcohol drink: 1 - person who had lifetime drinking experience, 0 - never drink; Income: quartile subgroup for gross house income.
OR: odds ratio; CI: confidence interval; PSM: propensity score matching.