Table 3

Biomarkers in children stratified by ethnicity

Cotinine (ng/ml)4-ABP-Hb (pg/g)PAH-albumin (fmol/μg)SCE (per cell)
A. African-American
 Mean5.6426.30.5509.80
 Number134139
 SD12.95.080.3691.86
B. Hispanic
 Mean1.8232.80.3569.83
 Number96479355
 SD2.5016.70.5042.34
A > B, adjusting for ETS exposureP = 0.059P > 0.1P = 0.021P > 0.1