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Table 1 Characteristics of study participants in 2015 and 2006 surveys

From: The impact of diagnosis on health-related quality of life in people with coeliac disease: a UK population-based longitudinal perspective

Variables 2015 survey 2006 survey
No. sampled 4000 2000
No. of completed and returned questionnaires 1584 788
Response rate 39.6% 39.4%
Sex – No. (%)
 Female 1151 (72.7) 559 (70.9)
 Male 432 (27.3) 224 (28.4)
Average age at survey – Mean (SD) 56 (21) 52 (19)
Average age at diagnosis – Mean (SD) 44 (20) 41 (19)
Age at diagnosis (categories) – No (%)
  < 18 188 (12.8) 97 (12.4)
 18–34 225 (15.3) 134 (17.2)
 35–44 244 (16.6) 188 (24.1)
 45–54 301 (20.5) 153 (19.6)
 55–64 277 (18.8) 128 (16.4)
 65+ 236 (16) 80 (10.3)
Family members with diagnosed CD – No. (%)
 Respondent only person 1237 (79) 728 (93)
 At least one other family member diagnosed 322 (21) 55 (7)
Following a GFD – No. (%)
 All the time 1427 (90.8) N/A
 Most of the time 131 (8.3) N/A
 Some/little/none of the time 14 (0.9) N/A