Spirometric reference values for Malagasy adults aged 18-73 years.
The American Thoracic Society (ATS) and European Respiratory Society (ERS) recommend that spirometry prediction equations be derived from samples of similar race/ethnicity. Malagasy prediction equations do not exist. The objectives of this study were to establish prediction equations for healthy Malagasy adults, and then compare Malagasy measurements with published prediction equations. We enrolled 2491 healthy Malagasy subjects aged 18-73 years (1428 males) from June 2006 to April 2008. The subjects attempted to meet the ATS/ERS 2005 guidelines when performing forced expiratory spirograms. We compared Malagasy measurements of forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) and FEV1/FVC with predictions from the European Community for Steel and Coal (ECSC), the third National Health and Nutrition Examination Survey (NHANES III) and the ERS Global Lung Function Initiative (GLI) 2012 study. A linear model for the entire population, using age and height as independent variables, best predicted all spirometry parameters for sea level and highland subjects. FEV1, FVC and FEV1/FVC were most accurately predicted by NHANES III African-American male and female, and by GLI 2012 black male and black and South East Asian female equations. ECSC-predicted FEV1, FVC and FEV1/FVC were poorly matched to Malagasy measurements. We provide the first spirometry reference equations for a healthy adult Malagasy population, and the first comparison of Malagasy population measurements with ECSC, NHANES III and GLI 2012 prediction equations.
Service de Pneumologie, Hôpital Privé d'Athis-Mons, Athis-Mons, France Both authors contributed equally.
Julia
J
Ratomaharo
Pulmonary and Critical Care Division, Dept of Medicine, Intermountain Medical Center, Murray, UT, USA Both authors contributed equally Olinto.linares@imail.org.
Olinto
O
Linares Perdomo
Office of Research, Intermountain Healthcare, Salt Lake City, UT, USA.
Dave S
DS
Collingridge
Service de Pneumologie, Centre Hospitalier Universitaire de Toamasina, Toamasina, Madagascar.
Rabezanahary
R
Andriamihaja
Pulmonary and Critical Care Division, Dept of Medicine, Intermountain Medical Center, Murray, UT, USA University of Utah, School of Medicine, Salt Lake City, UT, USA.
Matthew
M
Hegewald
Pulmonary and Critical Care Division, Dept of Medicine, Intermountain Medical Center, Murray, UT, USA University of Utah, School of Medicine, Salt Lake City, UT, USA.
Robert L
RL
Jensen
Hankinson Consulting, Inc., Athens, GA, USA.
John
J
Hankinson
Pulmonary and Critical Care Division, Dept of Medicine, Intermountain Medical Center, Murray, UT, USA University of Utah, School of Medicine, Salt Lake City, UT, USA.
Alan H
AH
Morris
D000293:Adolescent; D000328:Adult; D001741:Black or African American / Q000706:statistics & numerical data; D000367:Age Factors; D000368:Aged; D000375:Aging / Q000502:physiology*; D000886:Anthropometry; D015331:Cohort Studies; D003906:Developing Countries; D005260:Female; D005541:Forced Expiratory Volume / Q000502:physiology*; D064368:Healthy Volunteers; D006801:Humans; D016014:Linear Models; D008270:Madagascar; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011237:Predictive Value of Tests; D015656:Respiratory Mechanics / Q000502:physiology*; D012737:Sex Factors; D013147:Spirometry / Q000379:methods*; D044465:White People / Q000706:statistics & numerical data; D055815:Young Adult