Spirometric reference values in healthy non-smoking adults of urban population of Hyderabad division

This descriptive, cross-sectional study sought to obtain spirometric reference values in 450 healthy, non-smoking adults living in Hyderabad, India. Various lung function parameters were assessed in the study (FVC, FEV1, FEV1/FVC ratio, FEV6, PIF, PEF, FIVC, FEV1R, RV, IC, FRC, VC, TLC, TV, IRV, ERV), with measurements collected using a Vitalograph Alpha spirometer.