ABSTRACT
<p><b>OBJECTIVE</b>To describe geographical distribution and its transition of mortality of cancers in China.</p><p><b>METHODS</b>The information of 2 513 949 310 person years were collected in 1973-1975 and 142 660 482 person years in 2004-2005 respectively. Being standardizing the death rates of these two survey with 2000 national census population, the changes of mortality of main cancers was observed and the geographic distribution of cancers in 2004-2005 was analyzed.</p><p><b>RESULTS</b>A total of 1 865 445 cancer deaths were collected in 1973-1975, the standardized death rate was 99.61/100 000, and 193 839 cancer deaths were collected in 2004-2005, the standardized death rate was 123.72/100 000, with growth of 24.20%. District mortality analysis showed that the provincial standardized cancer death rates varied greatly, with the highest in Heilongjiang (7443 cases, 183.34/100 000), and the lowest in Yunnan (2454 cases, 61.03/100 000). The highest standardized death rate of esophageal cancer, gastric cancer, liver cancer, colon cancer, lung cancer, nasopharyngeal cancer, leukemia, female breast cancer, cervical cancer was in Henan (3535 cases, 32.95/100 000), Gansu (1333 cases, 59.35/100 000), Heilongjiang (1640 cases, 38.63/100 000), Shanghai (390 cases, 11.58/100 000), Heilongjiang (2382 cases, 60.15/100 000), Hainan (36 cases, 7.04/100 000), Tianjin (161 cases, 5.45/100 000), Heilongjiang (179 cases, 8.09/100 000), Xinjiang (131 cases, 10.69/100 000) respectively; the lowest standardized cancer death rate of above-mentioned cancers was in Yunnan (63 cases, 1.59/100 000), Beijing (235 cases, 5.95/100 000), Tianjin (454 cases, 10.86/100 000), Tibet (3 cases, 0.82/100 000), Tibet (12 cases, 3.29/100 000), Qinghai (0 case, 0.00/100 000), Tibet (1 cases, 0.28/100 000), Tibet (6 cases, 2.88/100 000), Chongqing (27 cases, 1.02/100 000) respectively.</p><p><b>CONCLUSION</b>Comparing the two surveys, the standardized mortality of cancers was increased. Most of cancers occurred obviously in cluster by geographical distribution.</p>
Subject(s)
Female , Humans , Male , Cause of Death , China , Epidemiology , Demography , Geography , Neoplasms , Epidemiology , Mortality , Vital StatisticsABSTRACT
<p><b>OBJECTIVE</b>To analyze the distribution characteristics and trend of ovary cancer mortality based on results of the Third National Retrospective Sampling Survey of Death Causes.</p><p><b>METHODS</b>Data of National Retrospective Sampling Survey for the years of 2004 - 2005 from 158 counties/cities/districts was used for the settings. A total of 69,690,241 person-year for female between 2004 and 2005 including 23,598,822 person-year in urban and 46,091,419 person-year in rural were respectively included in the study. Furthermore, the areas of east, middle, and west were divided into the subsets. And also the areas of urban and rural areas were divided into the subsets. The crude death rate and age-specific death rate and the age-standardized death rate by Chinese population of 1982 (CASR) and by world population of 1960 (WASR) were calculated. The historical comparison with the sampling survey of 1990 - 1992 (second time) was conducted, and the global comparison with some selected countries was performed.</p><p><b>RESULTS</b>The crude death rate for ovary cancer was 1.45/100 000 (1008/69 690 241) between 2004 and 2005, which was ranked the 12th and accounted for 1.45% (1008/69 667) of all sites of cancers. The CASR was 0.97/100 000 and the WASR was 1.26/100 000. The crude death rate of ovary cancer were 2.67/100 000 (630/23 598 822) and 0.82/100 000 (378/46 091 419) in urban and rural areas respectively, with the CASR of 1.62/100 000 and 0.59/100 000 in urban and rural areas respectively. Compared with the data from the second time (0.06/100 000 for crude death rate, 0.53/100 000 for CASR and 0.75% for proportion), the crude death rate increased by 141.07% and the CASR increased by 83.02%. The proportion of mortality was increased by 92.92%, which ranked from the 17th to the 12th. In the urban areas, the CASR of ovary cancer increased by 31.71% (1.23/100 000 vs 1.62/100 000), while by 118.52% in rural areas (0.27/100 000 vs 0.59/100 000) with an increasing trend more remarkable in rural than in urban.</p><p><b>CONCLUSION</b>Ovary cancer is not the leading site of cancer death-cause in China, its morality is higher in urban than in rural. It is necessary to pay more attention to ovary cancer in China.</p>