Table 4 Cox regression analysis of predictors of mortality among children on ART at East Gojjam zone public hospitals, Amhara regional state, North West Ethiopia, 2019 (N = 251)

Age

  < 1 year

10.57(2.94, 8.02)

8.92(2.62,30.36)

 1–5 year

4.54 (1.46, 14.16)

6.42(1.4, 29.5)

   ≥ 5 year

1

1

CD4 count

 Below threshold

9.27 (2.98, 28.76)

3.55(1.08, 11.67)

 Above threshold

1

1

Hemoglobin

  < 10 mg/dl

9.26(2.98, 28.76)

5.04(1.54, 16.55)

   ≥ 10 mg/dl

1

1

Baseline WHO stage

 Stage I &II

0.36(0.13, − 0.99)

0.45(0.16, 1.28)

 Stage III & IV

1

1

Taking CPT

 Yes

1

1

 No

4.95 (1.71, 14.30)

2.5(1.16, 8.20)

Opportunistic infections

 Yes

3.78 (1.37, 10.38)

2.18(0.63, 7.57)

 No

1

1

Weight for height

 Normal

1

1

 Moderate wasting

2.07 (0.58, 7.35)

1.82(0.53, 6.16)

 Sever wasting

21.39(6.86, 66.72)

5.18(1.25, 21.42)

Height for age

 Normal

1

1

 Moderate stunting

2.71(0.87, 8.40)

1.01(0.01,241.00)

 Sever stunting

12.24(3.44, 43.59)

0.70(0.01,1476.91)

Weight for age

 Normal

1

1

 Under weight

2.45 (0.79, 7.59)

2.33(0.54, 6.41)

 Sever under weight

8.89 (2.49, 31.66)

2.66(0.65, 13.45)

ART adherence

 Good

1

1

 Fair

2.72 (0.58, 12.83)

1.27(0.65, 8.22)

 Poor

10.89 (3.76, 1.54)

1.49(0.83, 7.54)

The regimen changed

 No

6.26 (2.17, 18.07)

5.62(2.34, 82)

 Yes

1

1