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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]