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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