Table 3

Final linear regression model for concentrations of patellar lead in women early after giving birth (n=430)

Variable	Patellar Pb (μg/g) estimate (95% CI)
Intercept	5.3 ( 3.2 to 7.4)
Life spent in Mexico City (%):^2-150
⩾40	5.0 ( 3.3 to 6.8)
Age (y):^2-151
20–25	3.1 ( 1.2 to 5.0)
26–30	6.7 ( 4.8 to 8.6)
31–40	4.8 ( 2.4 to 7.1)
Use of lead glazed pottery in past week:^2-152
To cook food	5.8 ( 4.3 to 7.3)
To store food	−3.7 (−5.6 to −1.8)
Total model R²	0.08

↵2-150 Compared with < 40% of lifetime spent living outside Mexico City.
↵2-151 Compared with those participants <20 years old.
↵2-152 Compared with participants who have never used lead glazed pottery to cook or store food.