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Table 2 Mean and median WTP values for each information form

From: Comparing how patients value and respond to information on risk given in three different forms during dental check-ups: the PREFER randomised controlled trial

WTPMedian (£)Interquartile rangeMeanStandard deviation95% confidence interval
For verbal information (n = 227)207–3530.2038.8724.69–34.89
For traffic light information (n = 271)102.5–27.520.9329.4917.46–24.59
For QLF information (n = 291)18.85–3525.5230.7021.76–28.81
  1. QLF quantitative light fluorescence, WTP willingness to pay