其他摘要:Background and aims Respiratory diseases are one of the more Prevalence occupational diseases in colour Production industries. Because chemical hazard that are present in such industries improving screening methods is essential. There is some kind of respiratory function evaluation methods it seems that serial peak flowmetry has found a new place. MethodS In this cross sectional study we did serial peak flowmetry in 30 workers of a colour production factory in 14days.Crude and means data were collected from each day and then were compared to another days data. Evaluation of two weeks data helped us to omit confounding variables.So coherency of two weeks data were confirmed validity of study. Results Mean degree of peak flowse due to last workday in propotion of first work day were significantly different (p Conclusion According to results of this study it seems that serial peak flowmetry test is more sensitive in screening and evaluation workers respiratory function in proportion of routine annual spirometry.