Table 2: The (a) genotype and (b) allele frequencies for asthmatic patients and control subjects of SNP in the human IL-13 gene.
(a)

Site GenotypeFrequencies valueaDFb
Asthmatic patients ( )Control subjects ( )

CC20 (2.3%)41 (43.6%)
−1111C>TCT51 (58.6%)43 (45.7%)0.0112
TT16 (18.4%)10 (10.6%)

GG28 (32.2%)24 (25.5%)
4257G>AGA39 (44.8%)57 (60.6%)0.0862
AA20 (23.0%)13 (13.8%)

(b)

SiteGenotypeFrequencies valueaDFb
Asthmatic patients ( )Normal subjects ( )

−1111C>TC91 (52.3%)125 (66.5%)0.0061
T83 (47.7%)63 (33.5%)

4257G>AG95 (54.6%)105 (55.9%)0.8111
A79 (45.4%)83 (44.1%)

Chi-square test.
bDF: degree of freedom.