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Repeated measures of FEV1 over six to twelve months: what change is abnormal?

Authors
Wang-ML; Petsonk-EL
Source
J Occup Environ Med 2004 Jun; 46(6):591-595
NIOSHTIC No.
20025595
Abstract
Monitoring change in FEV1 ([DELTA]FEV1) is useful for assessing adverse respiratory effects in an individual, but high variability impedes reliable recognition of accelerated decline. The American Thoracic Society (ATS) recommends a >=15% year-to-year FEV1 decline for clinical significance. To evaluate the applicability of this criterion in health monitoring programs, we examined the mean, lower 5th percentile, and lower 5% cutoff value of [DELTA]FEV1 determined from 2 tests at 6- and 12-month intervals using data obtained with ATS-recommended equipment and procedures in 389 white male workers, each with 3 to 11 spirometry tests over 5 years. Results indicate that when healthy working males perform spirometry according to ATS standards, a yearly decline in FEV1 greater than 8% or 330 mL should not be considered normal, whereas the 15% ATS criterion could be appropriate in clinical settings.
Keywords
Respiratory-system-disorders; Coal-miners; Mine-workers; Spirometry; Smoking; Airway-obstruction; Airway-resistance; Underground-miners; Lung-function; Pulmonary-system-disorders; Surveillance
Contact
Edward L. Petsonk, MD, FCCP, NIOSH, Mail Stop H-G900.2, 1095 Willowdale Road, Morgantown, WV 26505
CODEN
JOEMFM
Publication Date
20040601
Document Type
Journal Article
Email Address
elp2@cdc.gov
Fiscal Year
2004
NTIS Accession No.
NTIS Price
Issue of Publication
6
ISSN
1076-2752
NIOSH Division
DRDS
Source Name
Journal of Occupational and Environmental Medicine
State
WV
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