Table 3.
Hazard ratios (HR; 95% CI) for all-cause, cardiovascular disease, ischemic heart disease, other cardiovascular, and cancer mortality by tertile of blood lead at baseline.
| Tertile of Blood Pb |
||||
|---|---|---|---|---|
| 1st | 2nd | 3rd | p-trend | |
| <0.19 μmol/L (<4 μg/dL) | 0.19–0.29 μmol/L (4–6 μg/dL) | >0.29 μmol/L (>6 μg/dL) | ||
| N | 320 | 561 | 354 | |
| Follow-up, years | 2,472 | 4,431 | 2,867 | |
| Allcause | ||||
| Deaths | 72 | 144 | 110 | |
| Crude | Ref | 1.11 (0.84–1.47) | 1.27 (0.94–1.71) | 0.11 |
| Multivariable 1* | Ref | 0.81 (0.53–1.25) | 0.93 (0.59–1.45) | 0.84 |
| Multivariable 2† | Ref | 0.69 (0.41–1.19) | 0.84 (0.50–1.42) | 0.67 |
| All cardiovascular | ||||
| Deaths | 38 | 84 | 63 | |
| Crude | Ref | 1.23 (0.84–1.80) | 1.40 (0.94–2.09) | 0.10 |
| Multivariable 1* | Ref | 0.86 (0.49–1.51) | 0.99 (0.55–1.78) | 0.96 |
| Multivariable 2† | Ref | 0.63 (0.29–1.38) | 0.69 (0.33–1.47) | 0.44 |
| Ischemic heart disease | ||||
| Deaths | 17 | 36 | 29 | |
| Crude | Ref | 1.19 (0.67–2.11) | 1.44 (0.79–2.61) | 0.23 |
| Multivariable 1* | Ref | 1.13 (0.49–2.62) | 1.30 (0.54–3.17) | 0.55 |
| Multivariable 2† | Ref | 1.02 (0.32–3.21) | 1.04 (0.33–3.22) | 0.95 |
| Other cardiovascular | ||||
| Deaths | 21 | 48 | 34 | |
| Crude | Ref | 1.26 (0.76–2.11) | 1.37 (0.80–2.36) | 0.27 |
| Multivariable 1* | Ref | 0.64 (0.28–1.46) | 0.77 (0.34–1.74) | 0.65 |
| Multivariable 2 | Ref | 0.30 (0.09–1.03) | 0.39 (0.12–1.23) | 0.23 |
| Cancer | ||||
| Deaths | 28 | 57 | 40 | |
| Crude | Ref | 1.12 (0.71–1.76) | 1.17 (0.72–1.91) | 0.52 |
| Multivariable 1* | Ref | 0.84 (0.44–1.62) | 0.67 (0.33–1.37) | 0.26 |
| Multivariable 2‡ | Ref | 1.03 (0.42–2.55) | 0.53 (0.20–1.39) | 0.15 |
Adjusted for age, smoking (never/former/current & packyears), and education.
Same model, but excluding the 212 participants (72 deaths) who had ischemic heart disease (201) or stroke (12) at baseline.
Multivariable models of cancer excluding 197 participants (40 deaths) with cancer at baseline.