Table 2 Inequality indices estimates of the factors associated with prevalence 4 + ANC visits among pregnant women, 1998–2014

Economic status

 Difference

41.91

36.32

47.50

35.41

29.43

41.38

30.94

24.88

37.00

21.66

15.17

28.15

 PAF

37.48

32.00

42.96

31.17

26.41

35.93

20.03

15.27

24.79

12.39

9.62

15.16

 PAR

23.88

20.39

27.37

21.62

18.32

24.92

15.65

11.93

19.38

10.81

8.39

13.22

 Ratio

1.92

1.71

2.12

1.64

1.47

1.80

1.49

1.36

1.62

1.28

1.18

1.39

Level of education

 Difference

26.28

21.63

30.93

22.20

17.41

26.98

19.79

14.75

24.84

13.67

8.23

19.10

 PAF

20.88

16.67

25.09

16.40

13.06

19.73

12.85

9.16

16.54

6.47

4.19

8.74

 PAR

13.30

10.62

15.99

11.37

9.06

13.69

10.04

7.16

12.92

5.64

3.66

7.63

 Ratio

1.52

1.40

1.64

1.38

1.28

1.48

1.29

1.20

1.38

1.17

1.09

1.25

Place of residence

 Difference

20.05

15.30

24.81

23.32

19.18

27.45

16.56

12.09

21.04

9.33

5.76

12.91

 PAF

23.27

21.49

25.05

21.60

19.72

23.47

12.67

10.85

14.50

5.76

4.68

6.83

 PAR

14.83

13.69

15.96

14.98

13.68

16.28

9.90

8.48

11.33

5.02

4.09

5.96

 Ratio

1.34

1.25

1.44

1.38

1.30

1.46

1.23

1.16

1.30

1.11

1.07

1.16

Sub-national Region

 Difference

32.71

19.92

45.50

26.68

17.76

35.61

22.64

10.56

34.71

20.52

8.82

32.23

 PAF

17.26

5.18

29.33

16.49

9.45

23.54

14.57

4.06

25.07

7.14

2.94

11.35

 PAR

10.99

3.30

18.69

11.44

6.55

16.33

11.38

3.18

19.59

6.23

2.56

9.90

 Ratio

1.78

1.32

2.24

1.49

1.28

1.70

1.34

1.11

1.57

1.28

1.08

1.48