Table 1 Genotypic and allelic distribution of the Gln27Glu polymorphism of β₂-AR gene among angiographically confirmed coronary artery disease patients (CAD) and blood donors group (BD). CI, confidence interval

Genotypes

C/C

391 (50.6%)

613 (68.5%)

-

reference

-

C/G

337 (43.6%)

253 (28.3%)

2.09

[1.69 – 2.58]

< .001

G/G

45 (5.8%)

29 (3.2%)

2.43

[1.46 – 4.06]

< .001

Alleles

C

1119 (72.4%)

1479 (82.6%)

-

reference

-

G

427 (27.6%)

311 (17.4%)

1.81

[1.53 – 2.15]

< .001