PTB Patients (N = 150); n (%)

Control (N = 160); n (%)

OR [95% CI]

P value

Genotypes

GG

106 (70.7)

127 (79.4)

1.00 [reference]

GA

38 (25.3)

32 (20)

1.42 [0.83 - 2.43]

0.098

AA

6 (4)

1 (0.6)

7.19 [0.85 - 60.65

0.035*

AA vs GA

6 (4) vs 38 (25.3)

1 (0.6) vs 32 (20)

5.05 [0.58 - 44.19]

0.071

Dominant: AA vs GG + GA

144 (96)

159 (99.4)

1.08 [0.77 - 1.53]

0.32

Recessive: GG vs GA + AA

44 (29.3)

33 (20.6)

1.59 [0.95 - 2.68]

0.038*

Allele

G

250 (83.3)

286 (89.4)

1.00 [reference]

A

50 (16.7)

34 (10.6)

1.68 [1.05 - 2.68]

0.014*

HWE test (χ² (P value))

1.162 (0.281)

0.450 (0.502)