title: Evaluation of self-administered versus interviewer-administered completion of Edinburgh Claudication Questionnaire.
abstract: BACKGROUND
  The aim of this study was to determine the impacts of different administration modes on sensitivity and specificity of Edinburgh Claudication Questionnaire (ECQ) in estimation of Ankle Brachial Index (ABI) detecting lower extremity arterial disease (LEAD).
  
  
  METHODS
  Eligible respondents aged fifty years or older underwent first a self-administered (SA-) ECQ, and then an interviewer-administered (IA-) ECQ. Interviewing included additional guidance on symptoms relevant to claudication. ABI was measured by hand-held Doppler.
  
  
  RESULTS
  A total of 177 respondents (age: 64.67±9.19, male/female: 80/97) were enrolled. Questions 1, 2, 3, and 5 (collectively defines claudication) were responded significantly different on SA-ECQ and IA-ECQ modes. Markings of pain on the figure of ECQ also changed significantly when the procedure was guided. Of the respondents, none on SA-ECQ and 13.6% on IA-ECQ with positive claudication had a low ABI. Subjects with higher formal education level did similar to the whole group in both modes. Sensitivity and specificity of IA-ECQ was calculated as 25% and 88.5%, respectively, for ABI detected LEAD.
  
  
  CONCLUSIONS
  Respondents' perceptions of pain, discomfort, exertion or body regions described on ECQ may subject to errors without guidance. ECQ seems reliable in evaluating claudication only when specifically interviewed by an observer.
authors.affiliation: Department of Internal Medicine, Golcuk Military Hospital, Golcuk, Turkey - bbbasgoz@gmail.com.
authors.forename: Bilgin B
authors.initials: BB
authors.lastname: Basgoz
authors.affiliation: Department of Internal Medicine, Gulhane School of Medicine, Ankara, Turkey.
authors.forename: Ilker
authors.initials: I
authors.lastname: Tasci
authors.affiliation: Department of Medical Oncology, Gulhane School of Medicine, Ankara, Turkey.
authors.forename: Birol
authors.initials: B
authors.lastname: Yildiz
authors.affiliation: Department of Biostatistics, Gulhane School of Medicine, Ankara, Turkey.
authors.forename: Cengizhan
authors.initials: C
authors.lastname: Acikel
authors.affiliation: Department of Cardiology, Gulhane School of Medicine, Ankara, Turkey.
authors.forename: Hasan K
authors.initials: HK
authors.lastname: Kabul
authors.affiliation: Department of Internal Medicine, Gulhane School of Medicine, Ankara, Turkey.
authors.forename: Kenan
authors.initials: K
authors.lastname: Saglam
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D055109:Ankle Brachial Index; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007383:Intermittent Claudication / Q000175:diagnosis*; D035002:Lower Extremity / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D058729:Peripheral Arterial Disease / Q000175:diagnosis*; D011446:Prospective Studies; D012307:Risk Factors; D057566:Self Report; D011795:Surveys and Questionnaires; D014421:Turkey