title: Peripheral artery questionnaire improves ankle brachial index screening in symptomatic patients with peripheral artery disease.
abstract: OBJECTIVE
  The peripheral artery questionnaire (PAQ) is a disease-specific health status measure of patients with peripheral artery disease (PAD). Whether the PAQ scores are associated with a PAD diagnosis among patients with symptoms suspicious for PAD is unknown and could help increase the pretest probability of ankle brachial index (ABI) screening among patients with suspicious symptoms.
  
  
  METHODS
  The PAQ was completed by 567 patients evaluated for potential intermittent claudication at six tertiary centres. Demographics, medical history, physical examination findings and the PAQ domain scores were compared with ABI. A diagnostic threshold < 0.90 for a PAD diagnosis was assessed with a ROC of PAQ scores. The correlation between the PAQ Summary Score and ABI was also calculated.
  
  
  RESULTS
  The PAQ Summary Score was significantly lower in patients with low ABI as compared with those having a normal ABI (37.6 ± 19.0 vs. 70.1 ± 22.7, p < 0.001). The PAQ Summary Score and ABI were highly correlated (r = 0.56, p < 0.001) and the optimal PAQ Summary Score for predicting low ABI was 50.3 (AUC = 0.86, sensitivity 80.3%, specificity 78.3%).
  
  
  CONCLUSIONS
  The PAQ Summary Score was associated with an increased likelihood of PAD in patients with suspected PAD symptoms, and a low summary score (≤ 50.3) was an optimal threshold for predicting PAD among patients referred for ABI.
authors.affiliation: Department of Internal Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.
authors.forename: B-H
authors.initials: BH
authors.lastname: Kim
authors.forename: K-I
authors.initials: KI
authors.lastname: Cho
authors.forename: J
authors.initials: J
authors.lastname: Spertus
authors.forename: Y-H
authors.initials: YH
authors.lastname: Park
authors.forename: H-G
authors.initials: HG
authors.lastname: Je
authors.forename: M-S
authors.initials: MS
authors.lastname: Shin
authors.forename: J-H
authors.initials: JH
authors.lastname: Lee
authors.forename: J-S
authors.initials: JS
authors.lastname: Jang
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D055109:Ankle Brachial Index / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007383:Intermittent Claudication; D035002:Lower Extremity / Q000098:blood supply*; D008297:Male; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D058729:Peripheral Arterial Disease / Q000150:complications / Q000175:diagnosis* / Q000401:mortality; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires