Table 2 Testing the proportional hazard assumption

Mother’s education

Number of births in the past one year

No formal

1.00 (Ref)

No birth

1

Primary

4.83

0.03

1 birth

0.7

0.4

Secondary and higher

7.52

(<0.01)

2 births

1.24

0.27

GLOBAL

11.25

(<0.01)

GLOBAL

1.81

0.4

Father’s education

Number of births in the last five years

No formal

1.00 (Ref)

1 births

1

Primary

0.51

0.48

2 births

0.11

0.75

Secondary and higher

0.86

0.35

3 births

0.03

0.86

GLOBAL

1.12

0.57

4+ births

5

0.03

Sex of the child

GLOBAL

5.85

0.12

Male

1.00 (Ref)

Mother’s age

Female

1.99

0.16

Less than 20 years

1.00 (Ref)

Total number of children ever born

20-29 years

0.16

0.69

1 child

1.00 (Ref)

30-39 years

0.63

0.43

2

5.39

0.02

40+ years

0.08

0.78

3

0.44

0.51

GLOBAL

5.58

0.13

4+

0.26

0.61

Sex of household head

GLOBAL

14.61

(<0.01)

Male

1.00 (Ref)

Type of place of residence

Female

0.07

0.79

Rural

1.00 (Ref)

Source of drinking water

Urban

8.43

(<0.01)

Piped water

1.00 (Ref)

Wealth index

Borehole

0.17

0.68

Poorest

1.00 (Ref)

Well water

0.12

0.73

Poorer

0.17

0.7

Surface/pond/lake/Rain/etc.

2.58

0.11

Others

1.82

0.18

Middle

0

0.98

GLOBAL

6.55

0.16

Richer

6.94

(<0.01)

Mother’s occupation

Richest

2.26

0.13

Not working

1.00 (Ref)

GLOBAL

9.29

0.05

Sales and Services

0.202

0.65

Birth order

Agriculture

6.88

(<0.01)

1St

1.00 (Ref)

GLOBAL

14.41

(<0.01)

2nd

0.28

0.59

Type of birth

3rd

6.69

(<0.01)

single birth

1.00 (Ref)

4-th

2.64

0.1

Multiple births

13

(<0.01)

GLOBAL

8.46

0.04

Religion

Age at first birth

Catholic

1.00 (Ref)

<20 years

1.00 (Ref)

Muslim

0.009

0.92

20−29 years

0.1

0.75

Other Christians

0.73

0.39

30+ years

0.41

0.52

Others

1.59

0.21

GLOBAL

0.54

0.76

GLOBAL

2.21

0.53

<2 years

1.00 (Ref)

2 years

1.83

0.18

3 years

0.97

0.32

4 years

2.53

0.11

GLOBAL

8.69

0.03