Table 3 Bivariate and Multivariate Cox regression analysis results of Asphyxiated babies who were admitted at NICUs of Addis Ababa public hospitals, Ethiopia, 2021 [n = 411]

Maternal Age

  20 – 34 years

1

1

  < 20 years

0.94(0.58 – 1.52)

1.22(0.73—2.04)

  > 34 years

1.34(0.92 – 1.94)

1.28(0.85—1.95)

Place of residency

  Addis Ababa

1

1

  Out of Addis Ababa

0.78(0.58 – 1.05)

0.89(0.64- 1.23)

Mode of delivery

  SVD

1

1

  Assisted delivery

0.92(0.66 – 1.27)

0.89(0.62—1.26)

  C/S delivery

0.81(0.62 – 1.04)

0.89(0.66—1.19)

Prolonged labor

  No

1

1

  Yes

1.26(0.92 – 0.74)

1.21(0.85 -1.71)

Birth weight

  Normal

1

1

  Big baby

1.16( 0.71 – 1.91)

1.24(0.70—2.19)

  Low birth weight

0.63(0.48—0.83)

0.67(0.47—0.96)

Gestational Age

  Term

1

1

  Post term

0.60( 0.42 – 0.85)

0.96(0.61—1.50)

  Preterm

0.87(0.59 -1.29)

0.93(0.59—1.46)

Age at presentation

   < 24 h

1

1

  24 – 72 h

0.82(0.49 – 1.38)

0.45(0.16—1.23)

   > 72 h

0.45(0.22—0.92)

0.64( 0.28—1.43)

Fifth minutes APGAR

   ≥ 7

1

1

   < 7

0.81(0.64—1.03)

1.03(0.78—1.35)

Meconium aspiration syndrome

  No

1

1

  Yes

0.83(0.65—1.05)

0.89(0.68—1.16)

Hyperbilirubinemia

  No

1

1

  Yes

0.76(0.51—1.14)

1.28(0.81—2.01)

Necrotizing Enterocolitis

  No

1

1

  Yes

0.46(0.24—0.91)

0.64(0.30—1.36)

Acute kidney injury

  No

1

1

  Yes

0.69(0.40—1.18)

0.90 (0.49—1.64)

Thrombocytopenia

  No

1

1

  Yes

0.45(0.26 -0.75)

0.44(0.24—0.80)

Aminophylline

  No

1

1

  Yes

0.48(0.26 -0.89)

0.80(0.40—1.58)

Oxygenation

  No

1

1

  Yes

0.57(0.40—0.82)

0.69(0.45—1.07)

Resuscitation at delivery

  No

1

1

  Yes

0.80(0.60—1.07

1.00(0.71—1.41)

Ca^±± gluconate

  No

1

1

  Yes

0.61(0.48—0.79)

0.75(0.58—0.99)