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Table 4 Backwards stepwise regression on predictors of amount willing to pay for COVID-19 vaccine (n = 255)

From: Financing COVID-19 vaccination in sub-Saharan Africa: lessons from a nation-wide willingness to pay (WTP) survey in Ghana

Amount willing to pay (GHC)

Coef

Std.Err

P > t

[95%Conf

Interval]

Government response to COVID-19a

-5.233

4.729

0.270

-14.548

4.082

Elderly married

18.913

18.563

0.309

-17.648

55.473

Adherent to COVID-19 protocolb

10.300

4.995

0.040

0.463

20.137

Educated health workers

56.339

24.277

0.021

8.524

104.154

Christian health workers

-71.431

24.061

0.003

-118.821

-24.040

Impact of COVID-19c

5.541

4.675

0.237

-3.666

14.748

_cons

2.612

19.077

0.891

-34.962

40.186

  1. Legend: aindexed score on perceived government response strategy against COVID-19 on a five-point Likert scale where higher values depict better perceived response and vice-versa; bindexed score of overall adherence level to COVID-19 protocols on a five-point Likert scale where higher values depict better adherence and vice-versa; cindexed score on perceived impact of COVID-19 livelihood on a five-point Likert scale where higher values depict perceived less impact and vice-versa
  2. Note: Sample size (n = 255) in the regression model is the valid responses of persons who will accept to pay for the COVID-19 vaccine and those who did not respond in the affirmative were dropped from the regression model
  3. Step-wise backwards regression beginning with full model
  4. P = 0.9986 >= 0.3300 removing Married male
  5. P = 0.9866 > = 0.3300 removing Perception of COVID-19
  6. p = 0.9673 > = 0.3300 removing Elderly educated
  7. p = 0.9315 > = 0.3300 removing Married health worker
  8. p = 0.9022 > = 0.3300 removing Married Christian
  9. p = 0.7673 > = 0.3300 removing Elderly male
  10. p = 0.7735 > = 0.3300 removing Elderly Christian
  11. p = 0.5059 > = 0.3300 removing Male health worker
  12. p = 0.4332 > = 0.3300 removing Educated married
  13. p = 0.5386 > = 0.3300 removing Educated Christian
  14. p = 0.3999 > = 0.3300 removing Perception of vaccine
  15. p = 0.4132 > = 0.3300 removing Male Christian
  16. p = 0.5735> = 0.3300 removing Educated male
  17. Ordinary Least Squares Regression (Model specification)
  18. Source SS df MS Number of obs. = 255
  19. Model 73,041.375 6 12173.563 Prob > F = 0.005
  20. Residual 9.62e + 05 248 3879.462 R-squared = 0.071
  21. Total 1.04e + 06 254 4075.386 Root MSE = 62.285
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BMC Public Health

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