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Table 5 Cox estimation

From: Comparison of three classes of Marginal Risk Set Model in predicting infant mortality among newborn babies at Kigali University Teaching Hospital, Rwanda, 2016

MRSM

BMRSM

JMRSM

Covariate (reference)

Level

HR

SE

P > z

95% CI

HR

SE

P > z

95% CI

HR

SE

P > z

95% CI

Age (Under 20 years old)

20 to 34 years old

0.193

0.085

p < 0.001

[0.081; 0.458]

0.193

0.094

0.001

[0.074; 0.502]

0.193

0.088

p < 0.001

[0.079; 0.472]

35 years old and above

0.267

0.128 p < 0.001

0.006

[0.104; 0.682]

0.267

0.131

0.007

[0.102; 0.697]

0.267

0.124

0.004

[0.107; 0.662]

Residence (Rural)

Urban

0.766

0.150

0.175

[0.521; 1.126]

0.766

0.221

0.356

[0.435; 1.349]

0.766

0.221

0.356

[0.435; 1.350]

Antecedents (Not 1st newborn)

1st newborn

0.763

0.185

0.264

[0.475; 1.226]

0.763

0.219

0.345

[0.435; 1.338]

0.763

0.194

0.289

[0.463; 1.258]

Abortion (Not aborted)

Aborted once

1.404

0.453

0.293

[0.746; 2.643]

1.404

0.627

0.448

[0.585; 3.369]

1.404

0.593

0.422

[0.613; 3.215]

Aborted more than once

0.378

0.152

0.015

[0.172; 0.830]

0.378

0.336

0.274

[0.066; 2.155]

0.378

0.446

0.409

[0.038; 3.814]

Childbirth (Ventouse)

Natural

0.732

0.481

0.635

[0.202; 2.653]

0.732

0.369

0.537

[0.273; 1.968]

0.732

0.365

0.532

[0.276; 1.945]

Surgery

1.016

0.654

0.980

[0.288; 3.590]

1.016

0.480

0.973

[0.403; 2.565]

1.016

0.455

0.971

[0.423; 2.443]

Gender (Female)

Male

1.991

0.405

0.001

[1.336;2.966]

1.991

0.534

0.010

[1.177; 3.368]

1.991

0.601

0.023

[1.101; 3.599]

Number (Singleton)

Multiple

0.218

0.111

0.003

[0.080; 0.589]

0.218

0.155

0.033

[0.054; 0.882]

0.218

0.131

0.011

[0.067; 0.709]

APGAR (Below 4/10)

4/10 to 6/10

0.080

0.042

p < 0.001

[0.029; 0.224]

0.080

0.056

p < 0.001

[0.020; 0.319]

0.080

0.052

p < 0.001

[0.022; 0.287]

7/10 and above

0.021

0.011

p < 0.001

[0.008; 0.056]

0.021

0.014

p < 0.001

[0.006; 0.076]

0.021

0.011

p < 0.001

[0.008; 0.061]

Weight (Under 2500 g)

2500 g to 4500 g

0.236

0.070

p < 0.001

[0.131; 0.423]

0.236

0.077

p < 0.001

[0.124; 0.448]

0.236

0.068

p < 0.001

[0.134; 0.415]

Above 4500 g

0.378

0.257

0.153

[0.100; 1.436]

0.378

4.696

0.938

[0.000; 1.410 × 1010]

0.378

0.473

0.437

[0.033; 4.386]

Head (Below 32 cm)

32 cm to 36 cm

0.391

0.119

0.002

[0.216; 0.708]

0.391

0.101

p < 0.001

[0.236; 0.649]

0.391

0.115

0.001

[0.219; 0.698]

Above 36 cm

0.212

0.171

0.055

[0.043; 1.033]

0.212

3.376

0.922

[0.000; 7.780 × 1012]

0.212

0.238

0.167

[0.023; 1.913]

Height (Below 36 cm)

46 cm to 54 cm

0.828

0.283

0.582

[0.423; 1.620]

0.828

0.254

0.539

[0.454; 1.512]

0.828

0.284

0.582

[0.423; 1.622]

Above 54 cm

1.706

1.351

0.500

[0.361; 8.060]

1.706

28.569

0.975

[0.000; 3.090 × 1014]

1.706

1.747

0.602

[0.229; 12.707]

Adjusted MRSM

Adjusted BMRSM

Adjusted JMRSM

Covariate (reference)

Level

HR

SE

P > z

95% CI

HR

SE

P > z

95% CI

HR

SE

P > z

95% CI

Age (Under 20 years old)

20 to 34 years old

0.218

0.094

p < 0.001

[0.094; 0.509]

0.219

0.078

p < 0.001

[0.109; 0.439]

0.219

0.087

p < 0.001

[0.101; 0.476]

35 years old and above

0.341

0.157

0.019

[0.138; 0.841]

0.352

0.133

0.006

[0.167; 0.738]

0.352

0.141

0.009

[0.160; 0.771]

Abortion (Not aborted)

Aborted once

1.479

0.459

0.208

[0.804; 2.719]

Aborted more than once

0.424

0.161

0.024

[0.201; 0.892]

- 1.833

- 0.544

- 0.041

- [1.025; 3.278]

Gender (Female)

Male

1.886

0.374

0.001

[1.278; 2.783]

0.227

0.136

0.013

[0.070; 0.732]

1.833

0.528

0.036

[1.042; 3.225]

Number (Singleton)

Multiple

0.214

0.108

0.002

[0.079; 0.576]

0.091

0.053

p < 0.001

[0.029; 0.286]

0.227

0.135

0.013

[0.070; 0.730]

APGAR (Below 4/10)

4/10 to 6/10

0.098

0.050

p < 0.001

[0.036; 0.267]

0.026

0.013

p < 0.001

[0.010; 0.067]

0.091

0.062

p < 0.001

[0.024; 0.345]

7/10 and above

0.026

0.012

p < 0.001

[0.010; 0.066]

0.215

0.060

p < 0.001

[0.125; 0.371]

0.026

0.013

p < 0.001

[0.010; 0.069]

Weight (Under 2500 g)

2500 g to 4500 g

0.213

0.057

p < 0.001

[0.125; 0.361]

0.398

4.183

0.930

[0.000; 3.590 × 108]

0.215

0.057

p < 0.001

[0.128; 0.362]

Above 4500 g

0.364

0.245

0.134

[0.097; 1.364]

0.374

0.102

p < 0.001

[0.219; 0.640]

0.398

0.385

0.340

[0.060; 2.650]

Head (Below 32 cm)

32 cm to 36 cm

0.349

0.090

p < 0.001

[0.211; 0.579]

0.222

3.684

0.928

[0.000; 7.970 × 1013]

0.374

0.105

p < 0.001

[0.216; 0.648]

Above 36 cm

0.199

0.160

0.044

[0.042; 0.957]

    

0.222

0.253

0.186

[0.024; 2.067]

 

χ2 = 200.400, p < 0.001

χ2 = 190.114, p < 0.001

χ2 = 23.710, p < 0.001