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Table 1 Characteristics of the study population stratified by group

From: How does the EQ-5D-5L perform in asthma patients compared with an asthma-specific quality of life questionnaire?

   AllControl groupIntervention group
N (%)T0 371199 (53.6)172 (46.4)
MaleN (%)T0 217 (58.5)112 (56.3)105 (61.1)
AgeMean (SD)T0 51.4 (8.6)51.4 (8.6)51.4 (8.6)
BMIMean (SD)T0 29.8 (5.9)30.3 (5.8)29.1 (6.1)
Smoking statusT0Current smoker50 (13.5)26 (13.1)24 (14.0)
  Ex-smoker142 (38.3)69 (34.7)73 (42.4)
  Never smoker179 (48.3)104 (52.3)75 (43.6)
Employed (yes)N (%)T0 322 (86.8)176 (88.4)146 (84.9)
ACTT0 13.2 (3.7)13.3 (3.8)13.1 (3.5)
Mean (SD)T1 15.1 (4.1)14.8 (4.0)15.5 (4.1)
 T2 18.1 (5.0)15.3 (4.6)21.4 (3.2)
 T3 18.0 (4.8)15.8 (4.2)20.6 (4.0)
AQLQT0 3.97 (0.93)3.92 (0.91)4.03 (0.95)
Mean (SD)T1 4.21 (1.00)4.09 (1.02)4.36 (0.97)
 T2 4.87 (1.22)4.19 (1.00)5.66 (0.96)
 T3 4.90 (1.18)4.41 (1.02)5.47 (1.09)
EQ-5D indexT0 0.77 (0.20)0.77 (0.19)0.77 (0.21)
Mean (SD)T1 0.80 (0.19)0.78 (0.19)0.82 (0.19)
 T2 0.84 (0.18)0.79 (0.20)0.90 (0.15)
 T3 0.84 (0.20)0.80 (0.20)0.88 (0.18)
VAST0 57.2 (16.9)57.0 (17.6)57.5 (16.2)
Mean (SD)T1 60.3 (17.4)59.6 (18.5)61.2 (16.2)
 T2 68.0 (19.4)58.6 (18.5)78.9 (14.1)
 T3 67.1 (19.1)59.2 (17.6)76.2 (16.6)
  1. Abbreviations: BMI body mass index, ACT Asthma Control Test, AQLQ Asthma Quality of Life Questionnaire, VAS Visual Analog Scale