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6.
Am Rev Respir Dis ; 114(6): 1201-3, 1976 Dec.
Article in English | MEDLINE | ID: mdl-1008354

ABSTRACT

Five acceptable forced expiratory maneuvers were obtained with a portable spirometer from each person in a population of 1,670 selected from a stratified random sample of a community. The largest 3 of 5 tracings were identifiable as a significantly different subser of the 5 tracings. In 83 per cent of comparisons, the variance of the last 3 was greater than that of the largest 3. Among the largest 3 tracings the highest single value was also identified as significantly different from the other two tracings. For epidemiologic purposes the largest 3 of 5 acceptable tracings is preferable to the last 3 of 5.


Subject(s)
Expiratory Reserve Volume , Lung Volume Measurements , Lung/physiology , Adolescent , Adult , Aged , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Spirometry
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