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Table 3 Cox proportional regression model for risk of HIV infection or death at 3 months

From: HIV-free survival according to the early infant-feeding practices; a retrospective study in an anti-retroviral therapy programme in Makurdi, Nigeria

Variable

HIV-infection or Death N (%)

Univariate analysis p-value

Multivariate aHR (95%CI)

analysis p-value

Mode of feeding

    

EBF (Ref)

3 (20.0)

   

EBMS

3 (20.0)

0.209

0.368 (0.059 - 2.305)

0.286

MF

9 (60.0)

0.000

44.12 (5.574 - 349.214)

0.000

Birth weight (grams)

    

≥2500 (Ref)

15 (100.0)

   

˂2500

0 (0.0)

0.402

0.000 (0.000 - 0.000)

0.982

Gestational age

    

(weeks)

    

≥37 (Ref)

11 (78.3)

   

˂37

4 (26.7)

0.000

17.00 (1.817 – 159.083)

0.013

Mode of delivery

    

ELE C/S (Ref)

2 (13.3)

   

Vaginal

12 (80.0)

0.000

0.023 (0.000 – 1.271)

0.065

EME C/S

1 (6.7)

0.043

0.083 (0.001 – 7.157)

0.273

ROM

    

NO ROM (Ref)

2 (13.3)

   

˂4 hours

11 (73.3)

0.000

0.962 (0.085 – 10.835)

0.975

≥4 hours

2 (13.3)

0.029

NA

NA

Vaginal tear

    

No (Ref)

8 (53.3)

   

Yes

7 (46.7)

0.031

2.309 (0.604 – 8.832)

0.221

Oral thrush

    

No (Ref)

14 (93.3)

   

Yes

1 (6.7)

0.0231

0.034 (0.000 – 2.952)

0.137

Oral sores

    

No (Ref)

15 (100.0)

   

Yes

0 (0.0)

0.719

0.000 (0.000 – 0.000)

0.990

Mothers’ age group in years

    

15-24 (Ref)

    

25-34

1 (6.7)

   

35-39

10 (66.7)

0.319

NA

NA

≥40

3 (20.0)

0.178

  
 

1 (6.7)

0.155

  

*Mothers’ CD4 count (Cells/mm3)

    

≥500 (Ref)

3 (21.4)

   

˂200

3 (21.4)

0.329

1.592 (0.295 – 8.588)

0.588

200-349

2 (14.3)

0.499

0.359 (0.055 – 2.355)

0.286

350-499

6 (42.9)

0.093

0.139 (0.020 – 0.964)

0.046

*Mothers’ viral load (Copies/ml)

    

˂1000 (Ref)

7 (50.0)

   

1000-9999

2 (14.3)

0.998

1.421 (0.233 – 8.669)

0.703

10,000-99,999

5 (35.7)

0.004

10.68 (1.559 – 73.174)

0.016

≥100,000

0 (0.0)

0.981

0.000 (0.000 – 0.000)

0.994

PMTCT intervention in the mother

    

HAART

3 (20.0)

   

ARV

12 (80.0)

0.036

0.639 (0.068 – 6.010)

0.695

*Mothers’ hemoglobin

    

≥10 g/dl (Ref)

3 (20.0)

   

˂10 g/dl

12 (80.0)

0.570

NA

NA

Parity

    

1 (Ref)

3 (20.0)

   

2-4

9 (60.0)

0.075

3.107 (0.628 – 15.369)

0.165

≥5

3 (20.0)

0.056

4.378 (0.415 – 46.155)

0.219

Breast problems reported or diagnosed at any time between birth and the 3rd month

    

No (Ref)

14 (93.3)

   

Yes

1 (6.7)

0.311

16.365 (1.359 – 197.091)

0.028

Mothers’ vital status at 3rd month

    

Alive (Ref)

15 (100.0)

   

Dead

0 (0.0)

0.814

0.000 (0.000 – 0.000)

0.997

Mothers’ level of education

    

Some (Ref)

10 (66.7)

   

None

5 33.3

0.274

NA

NA

Mothers’ marital status

    

With a partner (Ref)

13 (86.7)

0.167

NA

NA

Without a partner

3 (13.3)

   

Mothers/Family monthly income Minimum wage and above (Ref)

    

Below minimum

1 (6.7)

   

wage (~105 USD)

14 (93.3)

0.150

NA

NA

  1. Legends: Ref = reference variable; EME C/S = emergency caesarean section; ELE C/S = elective caesarean section; EBF = exclusive breast feeding; EBMS = exclusive breast milk substitute feeding; MF = mixed feeding; ROM = rupture of membrane; PMTCT = prevention of mother to child transmission of HIV; HAART = highly active antiretroviral therapy; ARVs = antiretroviral prophylaxis; USD = United States dollars; * = pre-delivery values; NA = not available.