Part IV: Genes and epidemiology in anthropological adaptation studies: Familial correlations in lung function in populations residing at different altitudes in Chile

Abstract

Abstract Correlations between relatives (N=1476 pairs) for lung function (FVC, FEV‐3, FEV‐1 and Peak Flow rate) and height were determined in an Aymara population residing at different altitudes in Chile. The correlations reflect a heritability of lung function (adjusted for age, sex and height) which is lower than that for height in this population. Few of the coefficients were significantly different from zero for the vital capacity (FVC), suggesting a high environmental determination of its variability. Heritabili‐ties of Peak Flow rate and FEV‐1 were higher (30–50 percent), while somewhat more than 50 percent of the variation in height in this population was attributable to genetic variation. Lung function correlations between relatives, one or both of whom had migrated to a different altitude, were lower than correlations between relatives who had not moved, suggesting environmental contributions to the correlations via common environment or genotype‐environment interaction. This did not occur for he...