Table 2 Nested logistic regression models for perinatal mortality

Maternal Age

0.986

(0.956–1.018)

0.391

0.986

(0.955–1.017)

0.365

0.985

(0.954–1.016)

0.336

0.983

(0.952–1.015)

0.303

0.982

(0.950–1.014)

0.269

Spontaneous pregnancy

1.119

(0.145–8.645)

0.914

1.068

(0.138–8.260)

0.950

1.047

(0.133–8.215)

0.965

0.971

(0.122–7.688)

0.978

0.685

(0.088–5.318)

0.717

Smoker

1.403

(0.589–3.339)

0.444

1.453

(0.611–3.457)

0.398

1.478

(0.621–3.520)

0.377

1.440

(0.603–3.438)

0.411

1.660

(0.701–3.932)

0.249

Other Drugs (Cocaine/Heroin)

4.301

(1.277–14.480)

0.019

4.308

(1.287–14.423)

0.018

4.064

(1.188–13.906)

0.025

3.891

(1.126–13.448)

0.032

3.109

(0.842–11.878)

0.089

Preexisting Diabetes

0.300

(0.058–1.556)

0.152

0.299

(0.055–1.617)

0.161

0.276

(0.048–1.575)

0.148

0.277

(0.049–1.553)

0.145

0.304

(0.053–1.764)

0.184

Chronic Hypertension

2.582

(0.878–7.593)

0.085

2.615

(0.885–7.732)

0.082

2.426

(0.814–7.229)

0.112

2.263

(0.754–6.787)

0.145

2.185

(0.708–6.742)

0.174

Lupus

3.161

(0.691–14.457)

0.138

3.174

(0.701–14.370)

0.134

2.889

(0.630-13.246)

0.172

3.355

(0.725–15.516)

0.121

3.052

(0.652–14.292)

0.157

APS

14.548

(3.323–63.696)

< 0.001

11.800

(2.498–55.741)

0.002

11.058

(2.226–54.924)

0.003

9.532

(1.859–48.883)

0.007

10.049

(1.843–54.803)

0.008

PCOS

0.871

(0.113–6.682)

0.894

0.926

(0.120–7.145)

0.941

0.949

(0.122–7.370)

0.960

1.002

(0.129–7.812)

0.998

0.928

(0.114–7.543)

0.944

Hypothyroidism

0.675

(0.267–1.707)

0.406

0.687

(0.269–1.752)

0.432

0.696

(0.272–1.787)

0.452

0.729

(0.282–1.883)

0.514

0.812

(0.310–2.124)

0.671

Previous PE

0.963

(0.371-2.500)

0.938

1.080

(0.414–2.819)

0.875

1.110

(0.423–2.913)

0.832

1.178

(0.447–3.098)

0.740

1.165

(0.427–3.182)

0.766

Previous RCF

1.454

(0.543–3.888)

0.456

1.415

(0.525–3.810)

0.493

1.386

(0.511–3.754)

0.521

1.421

(0.525–3.844)

0.489

1.226

(0.441–3.404)

0.696

Mother with PE

1.033

(0.366–2.915)

0.951

1.086

(0.384–3.070)

0.876

1.097

(0.386–3.120)

0.861

1.189

(0.416–3.398)

0.746

1.096

(0.374–3.216)

0.867

pBMI

1.094

(1.034–1.156)

0.002

1.093

(1.033–1.156)

0.002

1.090

(1.030–1.153)

0.003

1.090

(1.029–1.155)

0.003

1.088

(1.026–1.153)

0.004

Gestational Age at delivery

0.513

(0.451–0.583)

< 0.001

0.512

(0.450–0.583)

< 0.001

0.512

(0.449–0.583)

< 0.001

0.508

(0.445–0.579)

< 0.001

0.510

(0.447–0.583)

< 0.001

Current PE

2.120

(0.833–5.399)

0.115

2.214

(0.866–5.660)

0.097

2.135

(0.826–5.519)

0.117

1.989

(0.767–5.161)

0.157

1.858

(0.694–4.974)

0.218

Current RCF

2.917

(1.441–5.904)

0.003

2.852

(1.403–5.796)

0.004

2.891

(1.421–5.881)

0.003

2.978

(1.463–6.064)

0.003

2.929

(1.399–6.135)

0.004

Nulliparity

0.993

(0.588–1.676)

0.978

1.010

(0.597–1.710)

0.969

0.996

(0.586–1.690)

0.987

0.971

(0.569–1.654)

0.913

0.945

(0.550–1.625)

0.839

Marital Status

1.002

(0.719–1.397)

0.991

1.002

(0.718–1.399)

0.990

1.010

(0.722–1.412)

0.913

1.058

(0.749–1.494)

0.749

Education

0.929

(0.719–1.199)

0.570

0.909

(0.703–1.176)

0.468

0.896

(0.691–1.163)

0.410

0.873

(0.671–1.135)

0.310

Health Insurance

0.554 (0.319–0.962)

0.036

0.566

(0.324–0.989)

0.046

0.591

(0.336–1.040)

0.068

0.586

(0.329–1.041)

0.068

High Social Support

0.428

(0.204-0.900)

0.025

0.433

(0.205–0.916)

0.029

0.511

(0.239–1.093)

0.083

Medium Social Support

0.701

(0.383–1.280)

0.247

0.685

(0.373–1.258)

0.223

0.748

(0.403–1.390)

0.359

Gender Violence

1.937

(0.767–4.894)

0.162

1.708

(0.669–4.358)

0.263

1.483

(0.575–3.826)

0.415

Overcrowding

2.073

(0.882–4.871)

0.095

1.741

(0.729–4.159)

0.212

Poverty

1.553

(0.764–3.155)

0.224

1.139

(0.549–2.364)

0.726

Extreme Poverty

1.522

(0.529–4.377)

0.435

1.817

(0.622–5.311)

0.275

High Vulnerability

5.332

(2.485–11.443)

< 0.001

Medium Vulnerability

3.084

(1.528–6.222)

0.002

LR Chi-squared

199.09

< 0.001

4.30

0.231

6.59

0.861

8.04

0.045

21.48

< 0.001