Table 9

Additional exploratory logistic regression model predicting the probability that a vaccinated participant has chosen to be vaccinated for a medical reason (n=523) vs a social reason (n=332)

PredictorEstimate±SEP valueOR (95% CI)
Orthodoxy score0.248±0.029<2×10-161.28 (1.21 to 1.35)
Age (10 years)0.181±0.0444.48×10-51.20 (1.10 to 1.31)
Belief that vaccination protects from disease−0.400±0.1810.02740.67 (0.47 to 0.96)
Belief that vaccination protects against infecting others0.265±0.1720.1241.30 (0.93 to 1.83)
Information from exchange with friends−0.691±0.3680.06040.50 (0.24 to 1.03)
AICc1004.3
Adj. KL-R20.126
Sensitivity0.704
Specificity0.651
Accuracy0.677
AUC0.621
  • Intercept calculated but omitted. Sensitivity and specificity are those that maximise the overall accuracy of classification.

  • Adj. KL-R2, adjusted Kullback-Leibler-R2; AICc, Akaike information criterion; AUC, area under the curve.