Predictive models and spatial variations of vital capacity in healthy people from 6 to 84 years old in China based on geographical factors

The aim of this study was to provide a scientific basic for a unified standard of the reference value of vital capacity (VC) of healthy subjects from 6 and 84 years old in China. The normal reference value of VC was correlated to seven geographical factors, including altitude (X ₁), annual duration...

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Bibliographic Details
Published inInternational journal of biometeorology Vol. 58; no. 5; pp. 769 - 779
Main Authors He, Jinwei, Ge, Miao, Wang, Congxia, Jiang, Naigui, Zhang, Mingxin, Yun, Pujun
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.07.2014
Springer Berlin Heidelberg
Springer Nature B.V
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Summary:The aim of this study was to provide a scientific basic for a unified standard of the reference value of vital capacity (VC) of healthy subjects from 6 and 84 years old in China. The normal reference value of VC was correlated to seven geographical factors, including altitude (X ₁), annual duration of sunshine (X ₂), annual mean air temperature (X ₃), annual mean relative humidity (X ₄), annual precipitation amount (X ₅), annual air temperature range (X ₆) and annual mean wind speed (X ₇). Predictive models were established by five different linear and nonlinear methods. The best models were selected by t-test. The geographical distribution map of VC in different age groups can be interpolated by Kriging’s method using ArcGIS software. It was found that the correlation of VC and geographical factors in China was quite significant, especially for both males and females aged from 6 to 45. The best models were built for different age groups. The geographical distribution map shows the spatial variations of VC in China precisely. The VC of healthy subjects can be simulated by the best model or acquired from the geographical distribution map provided the geographical factors for that city or county of China are known.
Bibliography:http://dx.doi.org/10.1007/s00484-013-0658-7
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ISSN:0020-7128
1432-1254
1432-1254
DOI:10.1007/s00484-013-0658-7