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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

WTP

Median (£)

Interquartile range

Mean

Standard deviation

95% confidence interval

For verbal information (n = 227)

20

7–35

30.20

38.87

24.69–34.89

For traffic light information (n = 271)

10

2.5–27.5

20.93

29.49

17.46–24.59

For QLF information (n = 291)

18.8

5–35

25.52

30.70

21.76–28.81

  1. QLF quantitative light fluorescence, WTP willingness to pay
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Trials

ISSN: 1745-6215