Table 3 Adjusted change in cortisol AM rise according to blood, tibia, and patella Pb concentrations in Mexico City women (2007–2011) 1
Pb biomarker/quantile | % Change in cortisol per hour (95% CI) | β Coefficient (95% CI) |
|---|---|---|
Blood Pb (n = 873) 2 |  |  |
Quintile 1 (0- < 1.8 µg/dL) | 5 (−5, 16) | Ref |
Quintile 2 (1.8- < 2.4 µg/dL) | 5 (−5, 16) | 0.00 (−0.06, 0.06) |
Quintile 3 (2.4- < 3.4 µg/dL) | 7 (−4, 18) | 0.01 (−0.05, 0.07) |
Quintile 4 (3.4- < 5.1 µg/dL) | −5 (−14, 5) | −0.04 (−0.11, 0.02) |
Quintile 5 (≥5.1 µg/dL) | −8 (−16, 2) | −0.06 (−0.12, 0.00) |
Continuous, per 2.5 µg/dL | N/A | −0.02 (−0.04, 0.00) |
Tibia Pb (n = 575) 3 |  |  |
Quantile 1 (<2 µg/g) | 4 (−4, 12) | Ref |
Quantile 2 (2- < 4.3 µg/g) | −8 (−21, 7) | −0.05 (−0.12, 0.03) |
Quantile 3 (4.3- < 6.7 µg/g) | 7 (−7, 23) | 0.02 (−0.05, 0.09) |
Quantile 4 (6.7- < 11.1 µg/g) | −9 (−22, 5) | −0.05 (−0.12, 0.02) |
Quantile 5 (≥11.1 µg/g) | 8 (−7, 25) | 0.02 (−0.05, 0.09) |
Patella Pb (n = 568) 3 |  |  |
Quantile 1 (<2 µg/g) | 2 (−6, 10) | Ref |
Quantile 2 (2- < 4.5 µg/g) | 11 (−3, 27) | 0.04 (−0.03, 0.11) |
Quantile 3 (4.5- < 7.8 µg/g) | −11 (−22, 3) | −0.05 (−0.12, 0.02) |
Quantile 4 (7.8- < 12.7 µg/g) | −2 (−15, 12) | −0.01 (−0.08, 0.06) |
Quantile 5 (>12.7-43.2 µg/g) | 7 (−7, 23) | 0.03 (−0.04, 0.10) |