%0 Journal Article %A Rahul Kodgule %A Virendra Singh %A Bodigovinda Saicharan %A Raja Dhar %A Jyoti Londhe %A Bill Brashier %A Udaiveer Singh %A Umar Hafiz %A Subhasis Mukherjee %A Sapna Madas %A Sundeep Salvi %A Parvaiz Koul %T Derivation of a predicted equation for peak expiratory flow (PEF) values in adult Indian population using EU scale peak flow meter (PFM) %D 2011 %J European Respiratory Journal %P 183 %V 38 %N Suppl 55 %X Although a PFM is a useful tool for diagnosis and management of asthma, there are no reliable reference values for the adult Indian population. The aim of this study was to derive a predicted equation for PEF for Indian adults using an EU scale PFM.Methodology: 5 centres representing different geographic, ethnic and socioeconomic backgrounds from India were selected (North: Srinagar, West: Jaipur, East: Kolkota, Centre: Pune and South: Hyderabad). Respiratory health and demographic questionnaires were administered to randomly selected 1000 rural and 1000 urban adults from each centre. Sampling was stratified according to gender, height and age. PEF values were measured using Breathometer (Cipla Ltd., India).The predicted equation was generated using linear regression analysis with SPSS software, Version 11.5.Results and conclusion: Out of 9746 participants, 3608 were excluded as unhealthy based on presence of respiratory symptoms, smoking status and/or previous respiratory disease. 80% of the 6138 healthy adults (M: 3720; F: 2418) were used to derive the predicted equation. The equation was validated by comparing the predicted PEF values with the measured values in the remaining 20% sample (Mean ΔPEF: M=3.7 L/min, CI= -0.9,8.3; F=3.1, CI= -1.4,7.6). Gender, age and height were found to be significant determinants of PEF. Using regression analysis, the predicted equations derived in L/min are: F: PEF = 168.551 – 1.776$*$age + 1.354$*$height; M: PEF = 69.259 – 2.290$*$age+ 2.888$*$height. These reference PEF values for Indian adults are 24% lower for males and 27% lower for females than the Caucasian population. %U