IL4 gene single locus association in Caucasian and African American population.

Associations between asthmatic and non-allergic controls, and between allergic and non-allergic controls were tested independently and odds ratios (OR) were determined using logistic regression based on the minor allele after adjusting for age, gender and population stratification.
aIndicates major and minor alleles are reversed in African American children. Confidence intervals are indicated in parenthesis, MAF stands for minor allele frequency.