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Table 3 Descriptive statistics and equality tests of WTP per QALY using PC and OE formats

From: Comparing the monetary value of a quality-adjusted life year from the payment card and the open-ended format

Questionnaires WTP technique N Zero response, N (%) Mean Standard deviation Median Minimum Maximum
Mild, 0.2 QALY PC 26 1 (3.8%) 37,890 32,658 28,426 500 129,000
OE 25 4 (16%) 25,476 20,243 23,000 5000 100,000
Mild, 0.4 QALY PC 25 0 (0%) 21,595 12,914 16,125 8000 64,500
OE 25 4 (16%) 18,119 27,211 7500 500 125,000
Moderate, 0.2 QALY PC 21 0 (0%) 75,631 107,888 64,500 16,000 516,000
OE 21 2 (10%) 105,447 125,083 100,000 2500 516,000
Moderate, 0.4 QALY PC 23 1 (4.3%) 51,295 54,553 32,250 8000 258,000
OE 22 3 (13.6%) 84,934 83,739 75,000 1250 250,000
Severe, 0.2 QALY PC 22 0 (0%) 34,409 18,187 32,250 16,000 64,500
OE 19 2 (11%) 40,000 36,827 25,000 10,000 150,000
Severe, 0.4 QALY PC 23 5 (21.7%) 13,278 9666 8000 750 32,250
OE 20 1 (5%) 19,868 20,331 12,500 1250 75,000
Terminal illness, 0.2 QALY PC 25 1 (4%) 280,177 219,279 258,000 16,000 1,000,000
OE 18 11 (61%) 570,714 413,727 420,000 75,000 1,000,000
Terminal illness, 0.4 QALY PC 26 1 (4%) 232,600 120,808 258,000 64,500 516,000
OE 25 0 (0%) 221,000 127,614 200,000 25,000 500,000
Immediate death, 0.2 QALY PC 19 2 (11%) 273,647 237,721 129,000 16,000 750,000
OE 26 3 (12%) 620,913 1,019,954 500,000 15,000 5,000,000
Immediate death, 0.4 QALY PC 25 1 (4%) 189,984 286,863 64,500 8000 1,250,000
OE 25 4 (16%) 242,381 235,387 250,000 7500 750,000
  1. PC payment card, OE open-ended