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Table 8 ZINB regression model parameter estimation for none zero group

From: Identifying the determinants and associated factors of mortality under age five in Ethiopia

Explanatory variables

Coef.

Z

P > |Z|

IRR

95% CI for IRR

Lower

Upper

Age

−0.0273

−5.58

0.000

0.9731

0.9638

0.9825

Place (Urban)

 Rural

−0.1265

−1.50

0.133

0.8812

0.7469

1.0395

Region (Tigray)

 Afar

0.2661

2.36

0.018

1.3446

1.0514

1.7196

 Amhara

0.1739

1.66

0.098

1.1900

0.9686

1.4618

 Oromia

0.0409

0.35

0.727

1.0417

0.8279

1.3108

 Somali

0.1463

1.16

0.247

1.1575

0.9035

1.4829

 Benshangul

0.4965

4.01

0.000

1.6429

1.2891

2.0938

 SNNPR

0.2187

1.94

0.053

1.2444

0.9976

1.5524

 Gambela

0.1218

0.83

0.404

1.1295

0.8485

1.5035

 Harari

0.0818

0.51

0.612

1.0852

0.7913

1.4884

 Addis Ababa

−0.0432

− 0.15

0.882

0.9577

0.5408

1.6960

 Dire Dawa

0.2867

2.06

0.040

1.3320

1.0136

1.7505

Mass Media (No)

 Yes

−0.0113

− 0.22

0.825

0.9888

0.8948

1.0926

Education level (No education)

 Primary

−0.3328

−7.25

0.000

0.7169

0.6552

0.7844

 Secondary and above

−0.5269

−5.79

0.000

0.5904

0.4940

0.7056

Source of drinking water (others)

 Piped water

−0.0118

− 0.27

0.786

0.9883

0.9079

1.0758

Toilet facility (No)

 Yes

−0.0250

−0.61

0.541

0.9753

0.9003

1.0566

Wealth index (Poor)

 Middle

−0.0368

−0.73

0.466

0.9638

0.8732

1.0640

 Rich

−0.0758

−1.52

0.130

0.9270

0.8405

1.0225

Religion (Orthodox)

 Protestant

0.0330

0.38

0.701

1.0336

0.8731

1.2235

 Muslim

0.0559

0.75

0.456

1.0575

0.9131

1.2246

 Others

0.0140

0.08

0.933

1.0141

0.7327

1.4034

Constant

−1.3697

−9.47

0.000

0.2542

0.1915

0.3375

 Lantotal

1 (offset)

1

 
  1. Note: IRR Incidence Rate Ratio; OR Odds Ratio; CI Confidence Interval; variable categories on the parenthesis are reference group; Coef. Coefficients (β); Z Z-calculated value; P P-value