Age Standardized Rate ( ASR ) and Age Standardized Cancer Ratio ( ASCR ) of Nasopharyngeal Cancer in Kariadi Central Hospital during 2002 - 2011

Abstract

Background: Every year in all over the world, the incidence of nasopharyngeal carcinoma increases. In Indonesia, there was no accurate data. To get an accurate result, without using this standardization, it would be unclear if differing mortality rates were due to age, sex or as a result of other factors. This study aimed to know the incidence of NPC in Kariadi Central Hospital during 2002 – 2011, the distribution trend based on age and sex, using the new WHO world standard, Age Standardization Rates ( ASR ) and Age Standardization Cancer Ratio ( ASCR ). Objectives: This study aimed to know the incidence of nasopharyngeal cancer in Dr.Kariadi Central Hospital during 2002 – 2011, the distribution trend based on age and sex, by counting the age standardization rates ( ASR ) and age standardization cancer ratio ( ASCR ) score. Methods: It was a descriptive retrospective research using secondary data from medical record of patients of nasopharyngeal carcinoma, diagnosed by Anatomic Pathology Laboratory of Kariadi Hospital-Medical Faculty Diponegoro University during January 1st,2002 - December 31st,2011. Data recorded were anatomic pathology diagnose that came from tissue biopsy or surgery, age & sex which were included clearly in medical record. The collected data were analysed by Microsoft Excel and presented descriptively. Result: There was an increase in the number of NPC patients from year 2002 until 2011, which at the beginning there was only 20 patients in 2002 but then increased to 95 in 2011. The highest number of patient is in the range of 45-49 years old with a total of 78 patients. Based on sex, the women ASR is higher than men ASR, the comparison between men ASR and women ASR in year 2002-2011 is 1:1,4 Conclusion: The highest number of patient is in the range of 45-49 years old with a total of 78 patients. Based on age, ASR and ASCR are consistently increase, exept in year 2002 and 2003 if it compare with the study before and compare in every year. However, based on sex, this study does not follow the trend. It can be caused by unavailability of data in some groups of age, so that the counting result became inaccurate. Keywords: Nasopharyngeal carcinoma, ASR, ASCR.