Economic Costs of Childhood Lead Exposure in Low- and Middle-Income Countries

http://dx.doi.org/10.1289/ehp.1206424



Table 2. Model parameter estimates for BLLs and related SDs predicted for each country in 2008.
Model parameter Mean (95% CI) p-Value
aFor countries where BLL and SD data were available, the country’s actual value was used.
BLL    
Intercept (β0), BLL (μg/dL)a 7.33 (6.18, 8.48) < 0.001
Time coefficient (x) –0.26 (–0.43, –0.09) 0.003
Quadratic time coefficient (x2) 0.01 (–0.01, 0.04) 0.31
R2 0.12  
SD    
Intercept (β0), SD (μg/dL)a 0.27 (–0.86, 1.41) 0.63
BLL coefficient (x1) 0.47 (0.33, 0.60) < 0.001
Time coefficient (x2) 0.14 (0.05, 0.24) 0.005
Quadratic time coefficient (x22) –0.001 (–0.023, 0.01) 0.89
R2 0.54