Publication: Reference spirometric values for healthy lifetime nonsmokers in Thailand
Issued Date
2000-05-01
Resource Type
ISSN
01252208
Other identifier(s)
2-s2.0-0034181890
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of the Medical Association of Thailand. Vol.83, No.5 (2000), 457-466
Suggested Citation
Wanchai Dejsomritrutai, Khun Nanta Maranetra, Kittipong Maneechotesuwan, Nitipatana Chierakul, Jamsak Tscheikuna, Tasneeya Suthamsmai, Arth Nana, Benjamas Chuaychoo, Phunsup Wongsurakiat, Suchai Charoenratanakul, Wilawan Juengprasert, Chana Naruman Reference spirometric values for healthy lifetime nonsmokers in Thailand. Journal of the Medical Association of Thailand. Vol.83, No.5 (2000), 457-466. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/26255
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Reference spirometric values for healthy lifetime nonsmokers in Thailand
Other Contributor(s)
Abstract
The normal spirometric reference values for Thai people are still not yet available. The aim of this study was to establish standard spirometric equations for Thai people. Subjects 10 years of age and over were selected and their demographic distributions represented that of the population of the whole country. Inclusion criteria were strictly lifetime nonsmokers, no history of chronic cardiopulmonary disease (using a modified ATS - DLD 78 respiratory adult questionnaire), normal standard chest radiograph and unremarkable physical examination. They had to be without respiratory symptoms at the time of the study. Spirometric values were obtained by 5 turbine system 'Pony graphic' (Cosmed, Italy) spirometers which met ATS recommendations. A normal group of 2299 women and 1655 men were selected. Regression analyses using sex, height and age as independent variables were used to provide equations for predicted values. The results were: Equations r2 SEE FVC(L) : M-2.601+0.122A-0.00046A2+0.00023H2-0.00061AH 0.669 0.434 : F-5.914+0.088A-0.0003A2+0.056H-0.0005AH 0.618 0.324 FEV1(L) : M-7.697+0.123A+0.067H-0.00034A2-0.0007AH 0.70 0.371 : F-10.603+0.085A-0.00019A2+0.12H-0.00022H2 0.681 0.275 -0.00056AH Equations r2 SEE FEF25-75%(L/S) : M-19.049+0.201A+0.207H-0.00042A2-0.00039H2 0.42 0.882 -0.0012AH : F-21.528+0.11A-0.00017A2+0.272H-0.0007H2-0.00082AH 0.456 0.664 PEFR(L/S) : M-16.859+0.307A+0.141H-0.0018A2-0.001AH 0.443 1.543 : F-31.355+0.162A-0.00084A2+0.391H-0.00099H2 0.29 1.117 -0.00072AH FEV1/FVC(%) M19.362+0.49A+0.829H-0.0023H2-0.0041AH 0.24 5.364 : F 83.126+0.243A+0.002A2+0.08H-0.0036AH 0.22 4.986 M = male, F = female, A = age (years), H = height (cms) FVC and FEV1 from this study are close to the Chinese but are 8-20 per cent lower than the Caucasians. These predicted equations are recommended to be used for future reference values in the Thai population.