Blood lead and blood pressure relations in female workers
| Systolic blood pressure (SBP) | Diastolic blood pressure (DBP) | Pulse pressure (PP) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dose-effect relation | n | Mean (SD) | Adjusted difference (95% CI†) | p value | Mean (SD) | Adjusted difference (95% CI†) | p value | Mean (SD) | Adjusted difference (95% CI†) | p value |
| Blood lead* (μg/l) | ||||||||||
| Control (<11.4) | 70 | 110.3 (9.8) | 72.7 (6.0) | 37.7 (7.0) | ||||||
| ≤20 to 40 | 17 | 115.2 (9.1) | 2.1 (−4.3 to 8.5) | 0.4582 | 76.1 (5.6) | 2.6 (−1.7 to 6.8) | 0.2745 | 39.2 (7.6) | 0.9 (−3.2 to 5.0) | 0.6689 |
| ≤40 to 60 | 59 | 115.9 (13.1) | 4.2 (0 to 8.5) | 0.0583 | 76.5 (13.1) | 4.1 (1.3 to 6.8) | 0.0079 | 39.4 (7.7) | 1.7 (−1.0 to 4.4) | 0.2244 |
| ≥60 | 47 | 119.8 (16.4) | 7.5 (3.0 to 12.0) | 0.0011 | 79.1 (9.5) | 6.3 (3.4 to 9.1) | 0.0001 | 40.7 (9.5) | 3.4 (0.5 to 6.2) | 0.0218 |
| SBP ≥125 mm Hg | DBP ≥80 mm Hg | PP ≥50 mm Hg | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dose-response relation | Prevalence | Odds ratio (95% CI†) | p value | Prevalence | Odds ratio (95% CI†) | p value | Prevalence | Odds ratio (95% CI†) | p value | |
| *Blood lead values on control workers were less than 11.4 μg/l, and those on exposed workers were more than 22.5 μg/l. | ||||||||||
| †Adjusted by the selected possible confounders for SBP, DBP, and PP in table 2. | ||||||||||
| Blood lead* | ||||||||||
| Control (<11.4) | 70 | 7.1% | 18.6% | 7.1% | ||||||
| ≤20 to 40 | 17 | 17.6% | 3.23 (0.55 to 19.04) | 0.1945 | 29.4% | 1.30 (0.32 to 5.40) | 0.7143 | 11.8% | 1.73 (0.27 to 11.06) | 0.5611 |
| ≤40 to 60 | 59 | 18.6% | 4.26 (1.07 to 17.04) | 0.0405 | 35.6% | 2.43 (0.97 to 6.04) | 0.0570 | 5.1% | 0.79 (0.16 to 3.82) | 0.7654 |
| ≥60 | 47 | 25.5% | 7.48 (1.86 to 30.12) | 0.0046 | 44.7% | 3.31 (1.29 to 8.50) | 0.0127 | 11.9% | 3.02 (0.77 to 11.81) | 0.1122 |