Variable | Log blood Pb concentration (μg/dl) | ||
---|---|---|---|
Model 1 Saturated regression model4-150 estimate (95% CI) | Model 2 Selected model without patellar Pb concentration estimate (95% CI) | Model 3 Selected model with patellar Pb concentration estimate (95% CI) | |
Intercept | 2.0 ( 1.9 to 2.10) | 2.0 ( 2.0 to 2.1) | 2.0 ( 1.9 to 2.0) |
Calcium intake quartile (g/day):4-151 | |||
830–1007 (n=117) | 0.11 ( 0.06 to 0.17) | 0.1 (−0.06 to 0.17) | 0.11 ( 0.06 to 0.16) |
1008–1383 (n=109) | 0.04 (−0.01 to 0.10) | 0.04 (−0.01 to 0.10) | 0.03 (−0.03 to 0.08) |
>1383 (n=93) | −0.03 (−0.09 to 0.03) | −0.03 (−0.03 to 0.09) | −0.05 (−0.10 to 0.06) |
Use of lead glazed pottery:4-152 | |||
To store food in past week | −0.03 (−0.19 to 0.03) | −0.04 (−0.02 to 0.10) | −0.011 (−0.07 to 0.05) |
To cook food in past week | 0.23 ( 0.17 to 0.28) | 0.23 ( 0.18 to 0.28) | 0.2 ( 0.13 to 0.23) |
Life spent in Mexico City (%):4-153 | |||
⩾40% | 0.10 ( 0.05 to 0.15) | ||
Concentration of patellar Pb | 0.007 ( 0.006 to 0.008) | ||
Total model R2 | 0.08 | 0.07 | 0.14 |
↵4-150 This model contained all variables related to concentration of blood Pb at the univariate level with p⩽0.10.
↵4-151 Compared with those in the lowest quartile of calcium intake.
↵4-152 Compared with participants who have not used lead glazed pottery in past week.
↵4-153 Compared with < 40% of lifetime spent living outside Mexico City.