title: [An investigation of brachial-ankle pulse wave velocity among middle-aged residents in Shanghai and Inner Mongolia autonomous region].
abstract: OBJECTIVE
  To compare the epidemiological characteristics and differences in brachial-ankle pulse wave velocity (baPWV) among middle-aged residents between Shanghai and Inner Mongolia autonomous region(Inner Mongolia), and to observe the prevalence of arterial stiffness in the two populations.
  
  
  METHODS
  A total of 922 volunteers aged between 45 and 59 from Shanghai and Inner Mongolia were selected by stratified cluster random sample method. BaPWV was measured and related data were collected.
  
  
  RESULTS
  A total of 903 cases were enrolled in this study, including 441 from Shanghai and 462 from Inner Mongolia. The baPWV value of middle-aged residents in Inner Mongolia was higher than that in Shanghai [(1 548 ± 281) cm/s and (1 476 ± 254) cm/s, P < 0.001]. The abnormal rate of baPWV (baPWV ≥ 1 400 cm/s) in Inner Mongolia was also higher than that in Shanghai [67.5% (312) and 57.4% (253) , P < 0.001]. The baPWV value of middle-aged men in Inner Mongolia was (1 568 ± 299) cm/s, while it was (1 508 ± 260) cm/s in Shanghai, no statistical difference was found (P > 0.05). The baPWV value of middle-aged women in Inner Mongolia was (1 534 ± 268) cm/s, which was higher than that of Shanghai [(1 468 ± 252) cm/s, P < 0.01]. The abnormal rate of baPWV of middle-aged men in Inner Mongolia and Shanghai was 67.0% (126/188) and 60.8% (59/97), respectively (P > 0.05). The abnormal rate of baPWV of middle-aged women in Inner Mongolia and Shanghai was 67.9% (186/274) and 56.4% (194/344), respectively.
  
  
  CONCLUSIONS
  The difference of baPWV value and abnormal rate of baPWV of middle-aged residents between Inner Mongolia and Shanghai exists. Middle-aged people in Inner Mongolia should be more alert to the incidence of arteriosclerosis and cardio-cerebrovascular diseases.
authors.forename: Xiaoliang
authors.initials: X
authors.lastname: Xie
authors.forename: Yan
authors.initials: Y
authors.lastname: Xing
authors.forename: Jue
authors.initials: J
authors.lastname: Li
authors.affiliation: Center for Cardiovascular and Pulmonary Blood Vessel, Tongji University, Shanghai 200092, China. Email: liangmed@126.com.
authors.forename: Dayi
authors.initials: D
authors.lastname: Hu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D055109:Ankle Brachial Index; D001161:Arteriosclerosis; D001783:Blood Flow Velocity; D001916:Brachial Artery / Q000503:physiopathology*; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008986:Mongolia / Q000453:epidemiology; D058729:Peripheral Arterial Disease / Q000208:ethnology* / Q000503:physiopathology; D015995:Prevalence; D011673:Pulsatile Flow; D012307:Risk Factors; D059289:Vascular Stiffness / Q000502:physiology*