Table 3 Included predictors and corresponding odds ratios in models.

Constant

0.26 (0.008–8.71)

− 1.35 (− 4.86 to 2.16)

3.43e + 14

33.47 (22.16–44.78)

Gestational week

0.95 (0.92–0.98) **

− 0.05 (− 0.08 to − 0.01) **

0.95 (0.91–0.98) **

− 0.05 (− 0.09 to − 0.01) **

Placenta previa

2.56 (1.62–4.05) ***

0.94 (0.48–1.40) ***

2.81 (1.75–4.51) ***

1.03 (0.56–1.51) ***

HBsAg positivity

1.72 (1.11–2.67) *

0.54 (0.11–0.98) *

1.99 (1.28–3.10) **

0.69 (0.25–1.13) **

Cardiac diseases

3.28 (1.72–6.28) ***

1.19 (0.54–1.84) ***

3.70 (1.94–7.06) ***

1.31 (0.66–1.95) ***

IDA

2.93 (2.07–4.15) ***

1.08 (0.73–1.42) ***

2.89 (2.02–4.11) ***

1.06 (0.71–1.41) ***

Dyspnea

3.41 (2.02–5.76) ***

1.23 (0.70–1.75) ***

2.93 (1.73–4.97) ***

1.08 (0.55–1.60) ***

Systolic blood pressure

1.01 (1.00–1.01)

0.005 (− 0.0003 to 0.01)

1.01 (1.00–1.01) *

0.006 (0.0008–0.01) *

Platelet count^a

0.45 (0.35–0.59) ***

− 0.79 (− 1.06 to 0.53) ***

6.29e − 06 (2.27e − 07–0.0002) ***

− 11.98 (− 15.30 to − 8.65) ***

Fibrinogen^a

0.41 (0.28–0.60) ***

− 0.90 (− 1.29 to − 0.51) ***

0.38 (0.26–0.56) ***

− 0.96 (− 1.36 to − 0.57) ***

Aspartate transferase^a

1.20 (1.01–1.43) *

0.18 (0.01–0.36) *

1.22 (1.02–1.45) *

0.20 (0.02–0.37) *

Total bilirubin^a

1.53 (1.18–1.98) **

0.42 (0.17–0.68) **

1.40 (1.07–1.85) **

0.39 (0.12–0.66) **

Creatinine^a

4.67 (3.36–6.48) ***

1.54 (1.21–1.87) ***

0.61 (0.11–3.35)

− 0.50 (− 2.21 to 1.21)

Urine protein

 + 

2.78 (0.83–9.29)

1.02 (− 0.19 to 2.23)

2.58 (0.77–8.60)

0.95 (− 0.26 to 2.15)

 +  + 

2.79 (0.83–9.42)

1.03 (− 0.19 to 2.24)

2.52 (0.75–8.50)

0.93 (− 0.29 to 2.13)

 +  +  + 

3.85 (1.14–12.98) *

1.35 (0.13–2.56) *

3.45 (1.03–11.60) *

1.24 (0.03–2.45) *

 + + + + 

4.16 (1.24–13.88) *

1.42 (0.22–2.63) *

3.82 (1.15–12.71) *

1.34 (0.14–2.54) *

Nonlinear term of platelet^a

–

–

2.30 (1.45–3.63) ***

0.83 (0.37–1.29) ***

Platelet × creatinine^a

–

–

1.09 (1.02–1.17) *

0.08 (0.01–0.15) *