fa سایر موضوعاتی که به مرزهای دانش در مهندسی صنایع و تولید کمک می کند Other related Industrial and production reserach subjects in which has direct relation to the state-of-the art of the IE پژوهشي Research <p> <i> There are miscellaneous quality characteristics in healthcare which are interested to be monitored. However, monitoring each characteristic needs a special statistical method. There are some characteristics with very small incidence rates that it’s usually considered not to be necessary to monitoring them, since their incidence rates are so small that p and np charts are not able to monitor them. Such characteristics are called “rare health-related events”. In this paper, while introducing the most common methods for monitoring the rare events, we are going to compare their performances based on the average run length (ARL) </i><i>. </i></p> Statistical Process Control, Healthcare, Rare Events, Sets Method, CUSCORE Method, SHDA Method, Bernoulli CUSUM, Average Run Length 253 261 http://ijiepm.iust.ac.ir/browse.php?a_code=A-10-18-6&slc_lang=fa&sid=1 Amir Afshin Fatahi afshinfatahi@iust.ac.ir 180031947532846005272 180031947532846005272 Yes Assistant professor of Industrial Eng., Islamic Azad University, Parand branch, Iran Rassoul Noorossana 180031947532846005273 180031947532846005273 No Professor of Industrial Eng., Iran University of Science and Technology, Iran Pershang Dokouhaki 180031947532846005274 180031947532846005274 No Instructor of Industrial Eng., Islamic Azad University, Parand branch, Iran Massoud Babkhani 180031947532846005275 180031947532846005275 No Assistant professor of Industrial Eng., Iran University of Science and Technology, Iran