The counting of injury deaths according to two definitions varied by external cause of injury as well as between countries. For some external causes of injury with high discrepancies, we suggest presenting the number of injury deaths according to two definitions.
Asian Pac J Cancer Prev, 15 (2), 793-796 IntroductionExamining site-specific cancer mortality across years or regions could help to generate epidemiological hypotheses or to evaluate cancer prevention programs. Given that site-specific cancer mortality is derived from information reported on the death certificate, if medical certifiers report poor-quality cancer-related cause-of-death statements, the validity of site-specific cancer mortality rates is threatened. For example, if a medical certifier reported only "tumor of the lung" on the death certificate, the coder would classify this case as ICD-10 code D38.1 "neoplasm of uncertain or unknown behavior of the lung" instead of ICD-10 code C34 "malignant neoplasm of the lung". In other words, if a country or region has more death certificates reporting "neoplasm of uncertain nature" by medical certifiers, the quality of site-specific cancer mortality data is less assured.One remedy to solve the above-mentioned problem is to query medical certifiers for more detailed information for coding purposes (National Center for Health Statistics, 2009). Because the availability of staff and resources used for querying varies across regions, the National Center for Of the 2,571 responses, in 1,398 cases (54%) medical certifiers were still unable to determine the nature of the neoplasm. There were four neoplasm sites for which more than 50% of the responses changed the category to malignant, the gastrointestinal system (73%), urinary system (60%), stomach (55%) and rectum (53%). The liver was the cancer site that showed the largest absolute increase in the number of deaths after the query; however, the brain showed the largest relative increase, at 12%. Conclusions: Different neoplasm sites showed different magnitudes of change in nature after the query. Brain cancer mortality rates exhibited the largest increase.
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