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Self‐reported physician‐diagnosed chronic obstructive pulmonary disease and spirometry patterns in Vietnam Era US Army Chemical Corps veterans: A retrospective cohort study
Author(s) -
Cypel Yasmin S.,
Hines Stella E.,
Davey Victoria J.,
Eber Stephanie M.,
Schneiderman Aaron I.
Publication year - 2018
Publication title -
american journal of industrial medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.7
H-Index - 104
eISSN - 1097-0274
pISSN - 0271-3586
DOI - 10.1002/ajim.22900
Subject(s) - medicine , spirometry , copd , odds ratio , retrospective cohort study , physical therapy , asthma
Background Research on chronic obstructive pulmonary disease (COPD) and herbicide exposure in Vietnam War veterans is limited. Methods Survey data were collected from 3193 US Army Chemical Corps veterans on herbicide exposure and self‐reported physician‐diagnosed COPD. Three spirometric patterns were used to define airflow obstruction (AFO): (i) FEV 1 /FVC < 70% (“fixed ratio”); (ii) FEV 1 /FVC < lower limit of normal (“LLN”); and (iii) (FEV 1 /FVC < LLN and FVC ≥ LLN and FEV 1