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Objectives: The aim of this study was to compare death rate in accepted patients in Masih Daneshvari hospital intensive care from 30th of November 2011 to 30th of December 2011 in comparison with unaccepted patients to the intensive care department. Methods: The research was done at Masih Daneshvari hospital on patients that had referred to the emergency, and hospitalized patients at the intensive care department. Overall, 170 candidates, who were hospitalized at intensive care were entered in the study with the method of aimed-incidental samplings. The information-collecting tool was a three-part survey; the first part included demographic information, the second part investigated acceptance and release factors in intensive care, and the third was the acute physiology and chronic health evaluation (APACHE II) tool. The collected data were analysed using the SPSS software. Results: Amongst the 170 candidates hospitalised at the intensive care unit (ICU), 81 people could enter the ICU after waiting three days, and the 89 remaining couldn't enter the ICU. The death rate in hospitalized candidates in ICU was 32.09 and for those who couldn't make it (not having entered the ICU) was 32.58. The average APACHE mark in ICU hospitalized patients was 12.00 ± 6.63 and for those who couldn't be hospitalized was 11.12 ± 6.69. Conclusions:On the basis of this study results, the APACHE score average and the death rate of those not able to enter the ICU in comparison with the hospitalized cases didn't have a significant difference (P ≥ 0.05). The common cause of patients death at intensive care was pneumonia, while deaths were more common amongst males and the elderly.