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

Control (N = 160); n (%)

OR [95% CI]

P value

Genotypes

TT

6 (4.0)

17 (10.6)

1.00 [reference]

TA

56 (37.3)

60 (37.5)

2.64 [0.97 - 7.18]

0.031*

AA

88 (58.7)

83 (51.9)

3.00 [1.13 - 7.98]

0.014*

AA vs TA

88 (58.7) vs 56 (37.3)

83 (51.9) vs 60 (37.5)

1.14 [0.71 - 1.82]

0.298

Dominant: AA vs TT + TA

62 (41.3)

77 (48.1)

0.3 [0.84 - 2.06]

0.114

Recessive: TT vs TA + AA

144 (96)

143 (89.4)

2.85 [1.09 - 7.44]

0.016*

Allele

T

68 (22.7)

94 (29.4)

1.00 [reference]

A

232 (77.3)

226 (70.6)

0.27 [0.15 - 0.44]

0.000001***

HWE test (χ² (P value))

0.632 (0.426)

1.481 (0.223)