Table 2 Analysis of multivariate logistic regression of four SNPs of HSP70 and its association with the IPF for three genetic inheritance models

 HSPA1 rs1043618

  GG Vs GC

−0.72

1

0.16

0.48

0.17–1.36

  GG Vs CC

−0.28

1

0.59

0.75

0.26–2.12

 HSPA1B rs1061581

  GG Vs GA

−1.50

1

0.006

0.22

0.07–0.65

  GG Vs AA

−1.73

1

<0.001

0.17

0.07–0.41

 HSPA1L rs2227956

  AA Vs AG

−1.06

1

0.049

0.34

0.12–0.99

 HSPA1L rs2075800

  CC Vs CT

0.45

1

0.29

1.58

0.67–3.71

  CC Vs TT

0.92

1

0.005

2.52

1.32–4.81

 HSPA1L rs2227956

  AA Vs AG + GG

−1.40

1

0.007

0.24

0.08–0.67

 HSPA1 rs1043618

  GG Vs GC + CC

−0.44

1

0.039

0.63

0.41–0.97

 HSPA1B rs1061581

  GG Vs GA + AA

0.17

1

0.63

1.18

0.59–2.39

 HSPA1 rs2075800

  CC Vs CT + TT

−0.36

1

0.27

0.69

0.36–1.33

 HSPA1 rs1043618

  GG + GC Vs CC

−0.35

1

0.47

0.70

0.26–1.85

 HSPA1B rs1061581

  GG + AG Vs AA

−1.78

1

<0.001

0.16

0.074–0.38

 HSPA1L rs2075800

  CC + CT Vs TT

0.99

1

0.001

2.70

1.46–4.98