Table 2 Mean WTP by annual income and results of Kruskal Wallis test for comparison of mean WTP among three groups
Annual Income | Common Cold | Retinal Detachment | Myocardiac Infarction |
Low income group (n = 92) | 30.0 | 1,929 | 7,728 |
Medium income group (n = 371) | 29.7 | 2,205 | 8,725 |
High income group (n = 266) | 29.8 | 2,399 | 9,440 |
p-value | 0.910 | 0.044 | 0.049 |