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Table 5 Logistic regression-based Attributable Fraction (AF), Stratum-specific Total Attributable Fraction (sTAF) and overall Total Attributable Fraction (TAF) of high fertility rate in each stratum from 1988 to 2008 presented in 5 years intervals

From: Inequality in fertility rate and modern contraceptive use among Ghanaian women from 1988–2008

Variables

High fertility rate (4 or more live births)

 

1988

1993

1998

2003

2008

Residence a

     

Urban

Ref

Ref

Ref

Ref

Ref

Rural: AF (sTAF)

0.29(0.21) 0.21

0.47(0.35) 0.35

0.50(0.39) 0.39

0.09(0.06) 0.06

0.29(0.20) 0.20

Total Attributable fraction(TAF)

     

Relative Index of Inequality (RII)

1.15

1.33

1.33

1.07

1.14

Slope Index of Inequality (SII)

0.54

0.70

0.69

0.49

0.84

p-value

0.006

<0.001

<0.001

0.137

<0.001

Educational level a

Never attended: AF (sTAF)

0.78(0.44)

0.84(0.43)

0.89(0.47)

0.74(0.39)

0.87(0.41)

Basic education: AF (sTAF)

0.68(0.28)

0.77(0.34)

0.80(0.35)

0.63(0.28)

0.74(0.36)

Secondary: AF (sTAF)

-

0(−)

0.50(0.01)

0(−)

0.23(0.01)

Higher

Ref

Ref

Ref

Ref

Ref

Total Attributable fraction (TAF)

0.72

0.77

0.83

0.67

0.78

Relative Index of Inequality (RII)

4.70

3.89

5.60

3.17

7.17

Slope Index of Inequality (SII)

3.24

2.08

2.30

4.82

5.89

p-value

<0.001

<0.001

<0.001

<0.001

<0.001

Income level a

Low income: AF (sTAF)

0(−)

No data

0.09(0.04)

0.67(0.37)

0.52(0.29)

Average income: AF (sTAF)

-

 

0.23(0.05)

0.58(0.11)

0.44(0.08)

High income

Ref

 

Ref

Ref

Ref

Total Attributable fraction(TAF)

0

 

0.09

0.48

0.37

Relative Index of Inequality (RII)

1.09

 

1.29

5.95

3.52

Slope Index of Inequality (SII)

0.33

 

0.63

5.86

4.90

p-value

0.701

 

0.176

<0.001

<0.001

  1. a adjusted for age, marital status and mutually for one another.