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Table 2 Adjusted association of log blood lead (μmol/L) and covariates on length-for-age Z score (LAZ), overall and stratified by zinc status

From: Differential association of lead on length by zinc status in two-year old Mexican children

  Overall (N = 291) Zinc Replete (N = 241) Zinc Deficient (N = 50)
β SE 95 % CI β SE 95 % CI β SE 95 % CI
Log Blood Lead (μmol/L) −0.19 0.08 −0.36, −0.03 −0.12 0.09 −0.30, 0.07 −0.43 0.20 −0.84, −0.02
Birthlength (cm) 0.10 0.03 0.05, 0.16 0.13 0.03 0.07, 0.18 −0.03 0.07 −0.18, 0.12
Energy Intake (1000 Kcal/d) 0.03 0.12 −0.26, 0.20 −0.11 0.13 −0.36, 0.13 −0.01 0.32 −0.65, 0.62
Breastfeeding (months) −0.01 0.01 −0.03, 0.00 −0.01 0.01 −0.03, 0.01 −0.02 0.02 −0.06, 0.03
Maternal Height (cm) 0.04 0.01 0.02, 0.06 0.04 0.01 0.02, 0.06 0.02 0.02 −0.02, 0.06
Maternal Education (years) −0.01 0.01 −0.03, 0.01 −0.02 0.01 −0.04, 0.00 0.04 0.04 −0.03, 0.11
 Adjusted R-squared 0.15    0.17    0.16