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Table 2 Asthma Status of the Interview Sample

From: Is the EQ-5D fit for purpose in asthma? Acceptability and content validity from the patient perspective

Characteristic

Interview Sample

Total Sample (N = 40)

Sample 1 (n = 25)

Sample 2 (n = 15)

Duration of asthma diagnosis (years)

 n

24

15

39

 Mean (SD)

24.3 (12.4)

22.2 (10.4)

23.5 (11.6)

 Median (Q1, Q3)

25.5 (13.0, 32.0)

20.0 (15.0, 30.5)

25.0 (13.5, 31.0)

 Range

3–57

2.5–40

2.5–57

Self-reported severity of asthma, n (%)

 Mild

8 (32.0)

3 (20.0)

11 (27.5)

 Moderate

15 (60.0)

11 (73.3)

26 (65.0)

 Severe

2 (8.0)

0 (0.0)

2 (5.0)

 Very severe

0 (0.0)

1 (6.7)

1 (2.5)

GINA asthma control,a n (%)

 Well controlled

1 (4.0)

1 (6.7)

2 (5.0)

 Partly controlled

10 (40.0)

5 (33.3)

15 (37.5)

 Uncontrolled

14 (56.0)

9 (60.0)

23 (57.5)

ACQ-6 score

 n

25

15

40

 Mean (SD)

1.6 (0.9)

1.9 (0.7)

1.7 (0.8)

 Median (Q1, Q3)

1.7 (0.8, 2.0)

1.8 (1.6, 2.3)

1.8 (1.2, 2.3)

 Range

0.3–3.7

0.7–3.3

0.3–3.7

Number of controller medications, n (%)

 1 controller

5 (20.0)

1 (6.7)

6 (15.0)

 2 controllers

18 (72.0)

10 (66.7)

28 (70.0)

 3 controllers

2 (8.0)

4 (26.7)

6 (15.0)

Number of attacks in last 2 years, n (%)

 0

9 (36.0)

1 (6.7)

10 (25.0)

 1

5 (20.0)

5 (33.3)

10 (25.0)

 2

6 (24.0)

7 (46.7)

13 (32.5)

 3 or more

5 (20.0)

2 (13.3)

7 (17.5)

  1. ACQ-6 6-item Asthma Control Questionnaire, GINA Global Initiative for Asthma, Q quartile, SD standard deviation
  2. aGINA asthma control was based on participants’ responses to four questions on activity limitations, daytime symptoms, night awakening, and medication use: well controlled = “no” responses to all four questions; partly controlled = “yes” responses to one or two questions; and uncontrolled = “yes” responses to three or four questions [44]