Table 2 Association between VDR gene SNPs and the risk of GDM

rs2228570

 Codominant model

  GG

219

230

1(ref.)

1(ref.)

  GA

389

415

0.98(0.78–1.24)

0.89

0.92(0.70–1.21)

0.53

  AA

206

203

1.07(0.82–1.39)

0.64

2.40(0.73–1.38)

0.99

 Dominant Model

  GG

219

230

1(ref.)

1(ref.)

  GA + AA

595

618

1.01(0.81–1.26)

0.92

0.94(0.73–1.22)

0.66

 Recessive Model

  GG + GA

608

645

1(ref.)

1(ref.)

  AA

206

203

1.08(0.86–1.35)

0.52

1.06(0.81–1.38)

0.67

 Overdominant model

  GG + AA

425

433

1(ref.)

1(ref.)

  GA

389

415

0.96(0.79–1.16)

0.64

0.92(0.73–1.15)

0.45

rs1544410

 Codominant model

  CC

752

776

1(ref.)

1(ref.)

  CT

63

69

0.94(0.66–1.35)

0.74

0.98(0.65–1.49)

0.92

  TT

3

3

1.03(0.21–5.13)

0.97

0.64(0.13–3.19)

0.58

 Dominant Model

  CC

752

776

1(ref.)

1(ref.)

  CT + TT

66

72

0.95(0.67–1.34)

0.76

0.96(0.64–1.43)

0.82

 Recessive Model

  CC + CT

815

845

1(ref.)

1(ref.)

 TT

3

3

1.04(0.21–5.15)

0.97

0.64(0.13–3.20)

0.58

  Overdominant model

  CC + TT

755

779

1(ref.)

1(ref.)

  CT

63

69

0.94(0.66–1.35)

0.74

0.98(0.65–1.49)

0.93

rs739837

 Codominant model

  GG

414

447

1(ref.)

1(ref.)

  GT

324

327

1.07(0.87–1.31)

0.52

1.10(0.86–1.41)

0.44

  TT

78

77

1.09(0.78–1.54)

0.61

1.12(0.80–1.66)

0.56

 Dominant Model

  GG

414

447

1(ref.)

1(ref.)

  GT + TT

402

404

1.07(0.89–1.30)

0.46

1.1(0.88–1.39)

0.39

 Recessive Model

  GG + GT

738

774

1(ref.)

1(ref.)

  TT

78

77

1.06(0.76–1.48)

0.72

1.08(0.74–1.57)

0.70

 Overdominant model

  GG + TT

492

524

1(ref.)

1(ref.)

  GT

324

327

1.06(0.87–1.28)

0.59

1.08(0.85–1.37)

0.52

rs731236

 Codominant model

  AA

745

778

1(ref.)

1(ref.)

  GA

68

67

1.06(0.75–1.51)

0.75

1.16(0.77–1.75)

0.48

  GG

4

4

1.04(0.26–4.19)

0.95

0.49(0.1–2.21)

0.35

 Dominant Model

  AA

745

778

1(ref.)

1(ref.)

  GA + GG

72

71

1.06(0.75–1.49)

0.74

1.10(0.74–1.64)

0.65

 Recessive Model

  AA + GA

813

845

1(ref.)

1(ref.)

  GG

4

4

1.04(0. 26-4.17)

0.96

0.48(0.1–2.18)

0.34

 Overdominant model

  AA + GG

749

782

1(ref.)

1(ref.)

 GA

68

67

1.06(0.75–1.51)

0.75

1.17(0.77–1.76)

0.47

rs7975232

 Codominant model

  CC

415

446

1(ref.)

1(ref.)

  CA

324

328

1.06(0.87–1.30)

0.57

1.10(0.86–1.40)

0.47

  AA

77

74

1.12(0.79–1.58)

0.53

1.19(0.79–1.77)

0.40

 Dominant Model

  CC

415

446

1(ref.)

1(ref.)

  CA + AA

401

402

1.07(0. 88 − 1.30)

0.48

1.11(0.89–1.40)

0.36

 Recessive Model

  CC + CA

739

774

1(ref.)

1(ref.)

  AA

77

74

1.09(0. 78-1.52)

0.61

1.14(0.78–1.68)

0.50

 Overdominant model

  CC + AA

492

520

1(ref.)

1(ref.)

 CA

324

328

1.04(0.86–1.27)

0.67

1.07(0.84–1.35)

0.60