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Table 3 Multilevel logistic regression models for the socio-demographic determinants of pregnancy termination

From: Socio-demographic determinants of pregnancy termination among adolescent girls and young women in selected high fertility countries in sub-Saharan Africa

Variables

Model 0

aOR[95%CI]

Model 1

aOR[95%CI]

Model 2

aOR[95%CI]

Model 3

aOR[95%CI]

Fixed effects results

    

Individual level factors

Age

  15–19

 

Reference

 

Reference

  20–24

 

2.34***[2.12–2.59]

 

2.35*** [2.13–2.60]

Level of education

  No Education

 

Reference

 

Reference

  Primary

 

1.39***[1.26–1.52]

 

1.13*[1.02–1.26]

  Secondary/Higher

 

0.98 [0.88–1.10]

 

0.80**[0.71–0.91]

Marital status

  Single

 

Reference

 

Reference

  Cohabiting

 

5.65*** [4.97–6.43]

 

6.29*** [5.60–7.20]

  Married

 

6.22*** [5.39–7.18]

 

5.49*** [4.74–6.36]

Wealth quintile

  Poorest

 

Reference

 

Reference

  Poorer

 

0.96 [0.86–1.08]

 

0.98 [0.87–1.10]

  Middle

 

0.97 [0.86–1.09]

 

1.00 [0.88–1.13]

  Richer

 

0.90 [0.79–1.02]

 

0.92 [0.80–1.05]

  Richest

 

0.87 [0.75–1.00]

 

0.87 [0.72–1.04

Frequency of reading newspaper/magazine

  Not at all

 

Reference

 

Reference

  Less than once a week

 

1.01 [0.86–1.19]

 

0.95 [0.81–1.12]

  At least once a week

 

1.06 [0.89–1.27]

 

1.02 [0.85–1.23]

Frequency of listening to radio

  Not at all

 

Reference

 

Reference

  Less than once a week

 

1.16** [1.03–1.29]

 

1.18** [1.05–1.32]

  At least once a week

 

1.22*** [1.18–1.34]

 

1.20*** [1.09–1.32]

Frequency of watching television

  Not at all

 

Reference

 

Reference

  Less than once a week

 

0.96 [0.85–1.09]

 

1.00 [0.87–1.14]

  At least once a week

 

1.08 [0.97–1.20]

 

1.13* [1.01–1.28]

Parity

  Zero births

 

Reference

 

Reference

  One birth

 

1.13* [1.01–1.27]

 

1.10 [0.98–1.23]

  Two births

 

0.94 [0.82–1.06]

 

0.89 [0.78–1.01]

  Three or more births

 

0.73***[0.64–0.85]

 

0.68***[0.59–0.80]

Contextual level factors

Place of residence

  Urban

  

Reference

Reference

  Rural

  

1.20**[1.08–1.33]

1.07 [0.95–1.20]

Community literacy level

  Low

  

Reference

Reference

  Moderate

  

0.91* [0.83–0.99]

1.10 [1.00–1.21]

  High

  

0.80***[0.72–0.90]

1.18* [1.04–1.34]

Community socio-economic status

  Low

  

Reference

Reference

  Moderate

  

0.89 [0.80–1.00]

0.98 [0.86–1.10]

  High

  

0.93 [0.82–1.04]

1.09 [0.94–1.26]

Random effects results

  PSU Variance(95% CI)

0.06 (0.03–0.10)

0.04 (0.02–0.09)

0.05 (0.03–0.10)

0.03 (0.01–0.08)

  ICC

0.2

0.01

0.02

0.01

  LR Test

χ2 = 15.4,

p < 0.001

χ2 = 6.2,

p < 0.05

χ2 = 14.2,

p < 0.001

χ2 = 4.0,

p < 0.05

Wald χ2

Reference

1982.9***

87.6***

2126.3***

Model fitness

 Log-likelihood

−12,320.6

−10,945.1

−12,275.7

−10,855

 AIC

24,645.3

21,930.2

24,565.3

21,776.4

Sample size

62,747

62,747

62,747

62,747

Number of clusters

1391

1391

1391

1391

  1. Exponentiated coefficients; 95% confidence intervals in brackets; *p < 0.05, **p < 0.01, ***p < 0.001
  2. PSU Primary Sampling Unit, ICC Intracluster correlation coefficient, LR Test Likelihood ratio Test, AIC Akaike’s Information Criterion, aOR adjusted Odds Ratios, CI Confidence Interval
  3. Model 0 is the null model, a baseline model without any explanatory variable
  4. Model 1 is adjusted for individual level variables
  5. Model 2 is adjusted for contextual level variables
  6. Model 3 is the final model adjusted for all explanatory variables and survey country