Table 4 Results of bi-variable and multivariable Cox regression analysis of SAM children admitted at FHCSH from 2016 to 2019, Northwest Ethiopia, 2020

HIV/AIDS

Reactive

13 (41.9)

18 (58.1)

2.83 (1.49,5.36)

2.80 (1.24, 6.34)*

Non-Reactive

37 (10.7)

308 (89.3)

1

1

TB

Yes

15 (24.6)

46 (75.4)

2.24 (1.23,4.09)

1.84(.88,3.85)

No

39 (9.5)

371 (90.5)

1

1

Pneumonia

Yes

33 (17.2)

159 (82.8)

2.45 (1.41,4.24)

0.95 (0.45, 2.00)

No

21 (7.5)

259 (92.5)

1

1

oxygen saturation

< 90%

40 (22.0)

142 (78.0)

5.85 (3.08,11.1)

3.32 (1.40,7.88)*

≥90%

14 (4.8)

276 (95.2)

1

1

Appetite test

Failed

31 (25.0)

93 (75.0)

4.2 (2.45,7.33)

2.45 (1.28, 4.69)*

Passed

22 (6.3)

325 (93.7)

1

1

WHZ

Z-score < −3

40 (13.9)

248 (86.1)

2.09 (1.13,3.85)

1.52 (0.69, 3.41)

Z-score ≥ − 3

14 (7.7)

168 (92.3)

1

1

IntakeofF-100

No

23 (19.5)

95 (80.5)

2.96 (1.71,5.10)

2.63 (1.35,5.12)*

Yes

31 (8.7)

327 (91.3)

1

1

NGT feeding

Yes

26 (17.8)

120 (82.2)

2.34 (1.37,4.00)

1.06 (0.55,2.03)

No

28 (8.5)

302 (91.5)

1

1

Edema

Yes

36 (19.2)

151 (80.8)

3.05 (1.73,5.37)

2.85 (1.44,5.64)*

No

18 (6.2)

271 (93.8)

1

1

Admission status

Impaired

16 (51.6)

15 (48.4)

6.66 (3.69,12.0)

2.25 (1.08,4.68)*

Conscious

38 (8.54)

407 (91.46)

1

1

Admission pulse rate

Altered

41 (15.0)

232 (85.0)

2.23 (1.19,4.16)

1.02 (0.42,2.46)

Normal

13 (6.4)

190 (93.6)

1

1

Admission respiratory rate

Altered

38 (17.8)

176 (82.2)

2.98 (1.66,5.35)

0.94 (0.38, 2.29)

Normal

16 (6.1)

246 (93.9)

1

1

HAZ

Z-score < −3

33 (14.7)

192 (85.3)

2.01 (1.16,3.48)

1.60 (0.75,3.42)

Z-score ≥ − 3

21 (8.5)

225 (91.5)

1

1

Chest indrawing

Yes

26 (24.3)

81 (75.7)

3.05 (1.79,5.22)

1.82 (0.86, 3.87)

No

28 (7.7)

337 (92.3)

1

1

Anemia

Yes

33 (15.5)

180 (84.5)

1.67(.96, 2.90)

1.78 (0.97,3.27)

No

21 (8.0)

242 (92.0)

1

1