Table 4 Linear regression model risk factors for neonatal transfer to neonatal care unit

Pre-pregnancy factors

Maternal age (Ref. 18-25 years)

   Under 18 years

1.0 (0.8-1.4)

1.0 (0.8-1.4)

0.9 (0.7-1.2)

   26-35 years

1.3 (1.1-1.4)**

1.2 (1.1-1.3)**

1.2 (1.1-1.3)**

   Over 35 years

1.1 (0.9-1.3)

1.0 (0.8-1.3)

1.0 (0.8-1.2)

Birth order (Ref. 2^nd child)

   1^st child

1.3 (1.2-1.4)**

1.3 (1.2-1.5)**

1.4 (1.2-1.5)**

   3^rd child

1.0 (0.8-1.1)

1.0 (0.9-1.1)

1.0 (0.9-1.1)

   4^th or more

1.2 (1.0-1.3)

1.3 (1.1-1.4)**

1.1 (1.0-1.3)

Body mass index(Ref 18.5-24.9)

   Underweight (<18.5)

1.0 (0.9-1.2)

1.0 (0.9-1.2)

1.0 (0.9-1.2)

   Overweight (25-29.9)

1.2 (1.1-1.3)**

1.2 (1.0-1.3)**

1.1 (1.0-1.2)

   Obesity(30+)

1.3 (1.1-1.5)**

1.2 (1.1-1.4)**

1.1 (1.0-1.3)

Single marital status

1.3 (1.1-1.5)**

1.2 (1.1-1.4)*

1.2 (1.0-1.3)*

Body height <150 cm

1.2 (1.1-1.4)*

1.0 (0.9-1.2)

1.1 c(0.9-1.2)

Paternal age (Ref 26-35 years)

   Under 26 years

1.2 (1.0-1.3)

1.1 (1.0-1.3)

1.2 (1.0-1.3)*

   36-45 years

1.0 (0.9-1.1)

0.9 (0.8-1.0)

0.9 (0.8-1.1)

   Over 45 years

1.1 (0.9-1.4)

1.1 (0.9-1.4)

1.1 (0.9-1.3)

Father's education (Ref sec/high)

   No education

1.2 (0.7-2.3)

0.8 (0.5-1.5)

0.5 (0.3-0.9)*

   Primary school

1.0 (0.9-1.1)

1.0 (0.9-1.1)

1.0 (0.9-1.1)

Pre-gestational diabetic

4.4 (3.3-5.8)**

3.5 (2.6-4.7)**

1.6 (0.7-3.3)

Maternal Lung disease

1.2 (1.1-1.4)**

1.2 (1.1-1.4)**

1.2 (1.0-1.3)*

Maternal Epilepsy

1.6 (1.0-2.6)

1.9 (1.2-2.9)**

1.4 (0.9-2.2)

Not boiling drinking water

1.2 (1.1-1.3)**

1.1 (1.0-1.3)**

1.1 (1.0-1.2)

Pregnancy, labour and delivery

Mother referred to ANC^§

-

1.3 (1.1-1.4)**

1.2 (1.0-1.3)*

ANC < 5 visits

-

1.3 (1.2-1.4)

1.2 (1.1-1.3)**

Gestational Diabetic

-

1.4 (0.6-3.4)

1.4 (0.5-4.5)

Hypertension

1.5 (0.9-2.4)

1.2 (0.7-1.9)

Preeclampsia

2.0 (1.7-2.3)**

1.3 (1.1-1.5)**

Eclampsia

-

2.8 (1.7-4.4)**

0.9 (0.6-1.6)

Abruptio placenta

-

2.6 (1.6-4.1)**

1.1 (0.7-1.8)

Premature rupture of membrane

-

2.9 (2.6-3.4)**

2.3 (1.9-2.7)*

Caesarian section

-

2.1 (1.9-2.3)**

1.9 (1.8-2.1)**

Other vaginal delivery

-

2.9 (2.3-3.6)**

2.2 (1.7-2.9)**

Other unspecified complications

-

1.8 (1.4-2.3)**

1.5 (1.2-1.9)**

Neonatal factors

Birth weight >4000 g

-

-

7.2 (6.5-8.0)**

Birth Weight 1500-2500 g

-

-

2.8 (2.5-3.1)**

Birth weight <1500 g

-

-

3.0 (2.3-4.0)**'

Gestational age below 34 weeks

-

-

1.8 (1.5-2.1)**

Gestational age 34-36 weeks

-

-

1.3 1.3 (1.1-1.5)**

Five minutes Apgar score <7

-

-

4.0 (3.4-4.6)**

Male sex

1.2 (1.1-1.3)**