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Table 3 Subjects' scorin g of questionnaires

From: Health-related quality of life, utility, and productivity outcomes instruments: ease of completion by subjects with COPD

Questionnaire (n) Score
  Very easy (1) Easy (2) Acceptable (3) Difficult (4) Very difficult (5)
  n (%) n (%) n (%) n (%) n (%)
SF-36 (174) 26 (15) 80 (46) 54 (31) 9 (5) 5 (3)
SGRQ (174) 22 (13) 79 (45) 55 (32) 13 (7) 5 (3)
EQ-5D (174) 18 (10) 70 (40) 51 (29) 28 (16) 7 (4)
WPAI-COPD (173) 22 (13) 79 (46) 43 (25) 17 (10) 12 (7)
HS-COPD (173) 8 (5) 34 (20) 49 (28) 46 (27) 36 (21)