Table 2 Genotypic and allelic distribution of the Gln27Glu polymorphism of β₂-AR gene among angiographically confirmed coronary artery disease patients (CAD) and angiographed controls (CON). CI, confidence interval

Genotypes

C/C

391 (50.6%)

379 (71.8%)

-

reference

-

C/G

337 (43.6%)

129 (24.4%)

2.53

[1.97 – 3.24]

< .001

G/G

45 (5.8%)

20 (3.8%)

2.18

[1.26 – 3.76]

.005

Alleles

C

1119 (72.4%)

887 (84.5%)

-

reference

-

G

427 (27.6%)

163 (15.5%)

2.08

[1.69 – 2.55]

< .001