title: [Reproducibility of a portable spirometer based on differential pressure sensor].
abstract: OBJECTIVE
  Assessing the reproducibility of a portable spirometer, including reproducibility of inter-observer and day-today.
  
  
  METHODS
  Lung ventilation function was performed in 22 healthy volunteers by two observers on the same day and repeated by the first observer after 24h.
  
  
  RESULTS
  The inter-observer and day-to-day intra-class correlation coefficients are all higher than 0.75. There are no significant difference between each other. Bland-Altman chart shows good limits of agreement between inter-observer and day-to-day, only scattered data are outside of the limits of agreement.
  
  
  CONCLUSIONS
  The portable spirometer shows good inter-observer and day-to-day reproducibility, and can be used for testing lung function in clinical.
authors.affiliation: Dept of Rehabilitation Medicine, The Provincial Hospital Affiliated to Anhui Medical University, Hefei, 230001. zoukun8088@163.com
authors.forename: Kun
authors.initials: K
authors.lastname: Zou
authors.forename: Chaomin
authors.initials: C
authors.lastname: Ni
authors.forename: Zhijun
authors.initials: Z
authors.lastname: He
authors.forename: Yongliang
authors.initials: Y
authors.lastname: Zhang
authors.forename: Zuchang
authors.initials: Z
authors.lastname: Ma
authors.forename: Jianxia
authors.initials: J
authors.lastname: Song
authors.forename: Ke
authors.initials: K
authors.lastname: Zhang
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation*; D015588:Observer Variation; D015203:Reproducibility of Results; D013147:Spirometry / Q000295:instrumentation*