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Table 1 Scenarios of questionnaire

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

 

Health state

No

EQ-5D-5 L description

QALY gain

Period (months)a

Treatment scenario

Mild

1

12,122

I have no problems in walking about; I have slight problems washing or dressing myself; I have no problems doing my usual activities; I have slight pain or discomfort; I am slightly anxious or depressed

0.2

15

Mild

2

0.4

31

Moderate

3

23,332

I have slight problems in walking about; I have moderate problems washing or dressing myself; I have moderate problems doing my usual activities; I have moderate pain or discomfort; I am slightly anxious or depressed

0.2

5

Moderate

4

0.4

10

Severe

5

44,332

I have severe problems in walking about; I have severe problems washing or dressing myself; I have moderate problems doing my usual activities; I have moderate pain or discomfort; I am slightly anxious or depressed

0.2

3

Severe

6

0.4

6

Terminal illness

 

7

0.2

15

8

0.4

26

Immediate death

 

9

11,115

I have no problems in walking about; I have no problems washing or dressing myself; I have no problems doing my usual activities; I have no pain or discomfort; I am extremely anxious or depressed

0.2

3

10

0.4

6

  1. aSince QALY = the period of life length (year) * utility of health state, the period was calculated as follows
  2. For treatment scenarios, the period (month) = QALY gain/(utility of health state after treatment − utility of health state before treatment) * 12
  3. Health state after treatment is perfect health, hence, the period (month) = QALY gain/ (1 − utility of health state before treatment) * 12
  4. For terminal illness and immediate death, the treatment can prolong life expectancy in assumed health state, which should result in 0.2 or 0.4 QALY gain. Hence, for terminal illness the period (month) = QALY gain/utility of health state*12 + 3. For immediate death, QALY gain/utility of health state * 12