Abstract
Theresults ofventilatory function tests (FVC, FEV1,andFEV%)depend toagreat extent onage andheight. Inepidemiological investigations, the mainpurpose ofwhich istoanalyse theinfluence of environmental factors on lungfunction inthe population, itistherefore necessary tousemultiple regression methods. Thisformofstatistical analysis isdifficult andlaborious whenthere isnoaccess toa computer. Analternative method istouseindices of ventilatory function thatadjust forageandheight. Khosla (1971) hasrecently developed aseries of suchindices. Theseindices showahigh correlation withventilatory tests andareindependent ofage andheight. Themainpurpose ofourworkwastotestthe value ofthese newindices onmaterial fromourown epidemiological studies of chronic non-specific chest disease carried outintwosmallindustrial enterprises inKrakow, taking intoaccountthe possible anthropological differences betweenthe British andPolish populations.
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