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. 2016 Mar 1;13(3):273. doi: 10.3390/ijerph13030273

Table 3.

WTP acceptance rating by disease stage.

Disease Grade Obs (%) Acceptance Rating (SD)
Mild 40 28.16 0.47 0.50
Moderate 53 37.32 0.54 0.51
Severe 30 21.13 0.78 0.50
Very Severe 19 13.38 0.53 0.50

Abbreviations: WTP: willingness to pay; Obs, observation number; SD, standard deviation.