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Dear Experts, What is the sampling method that can be used to select a daily sample (in-patient medical records) from a population divided into 22 departments, e.g. oncology, pediatric, …, etc? The number of medical records varies from department to department. I want to select the sample in a daily basis, can I use the stratified method and if it is stratified method, is it proportions stratified sample? Many thanks in advance. Omar. --------------------------------- It's here! Your new message! Get new email alerts with the free Yahoo! Toolbar.