The decline in the mortality rates of cervical cancer and a plausible explanation in Shandong, China

Li, Huiqing; Jin, Shi-quan; Xu, Hai-xiu; Thomas, David B.

doi:10.1093/intjepid/29.3.398

Cited by 17 publications

(17 citation statements)

References 26 publications

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“…However, as noted in the national mortality data, 15 rates are increasing in young women, under the age of 45. Li et al 46 noted that the changes in mortality rates in Shandong province were birth-cohort related, and suggested that the increased rates among younger women may reflect rapid changes in sexual mores, with increasing high-risk sexual behaviour, and greater prevalence of infection with human papilloma virus and other sexually transmitted agents. 47 The estimated incidence of breast cancer in China in 2000 14 is relatively low, with a ASR of 19.9 per 100,000.…”

Section: Discussionmentioning

confidence: 99%

Trends in the incidence of cancer in Qidong, China, 1978–2002

Chen

Zhu

Parkin

et al. 2006

Intl Journal of Cancer

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A population-based cancer registry was established in Qidong, Jiangsu Province, China, in 1972, and the trends in incidence rates of the major cancer sites have been analyzed for a 25-year period, 1978-2002. Five-year age-specific rates, crude incidence rates, world age-standardized rates (ASR), percent change (PC) and annual percent change (APC) were calculated using annual data on population size, and estimates of its age structure. The indices of histological verification of diagnosis, death certificate only and proportion of mortality to incidence were employed for assessing the registration quality. A total of 51,933 incident cases of cancer were registered in Qidong from years 1978 to 2002, with a maleto-female sex ratio of 1.9:1. Crude incidence increased markedly over the 25-year period (PC and APC of 155.6% and 12.1%, respectively), but ASR showed a slight decrease (20.4% in males, and 20.3% in females), indicating that the major part of this is due to population ageing. The leading cancer sites in rank were liver (average ASR 5 50.8 per 100,000), stomach (26.7), lung (22.7), colon-rectum (8.9), oesophagus (7.4) and breast (5.4). Cancers of liver, lung, colon-rectum and female breast all showed increases in incidence during the study period, with APCs (ASR) of 10.1%, 11.7% and 11.4% for males, and 10.2%, 10.9%, 11.9% and 11.1% for females, while the cancers of stomach (APC: 23.2% in male, and 22.4% in female) and cervix (APC: 24.7%) showed notable declines. Examination of age-specific rates showed declining trends in the younger generations for liver cancer, but increases for cervix cancer. The results underline the increasing importance of cancer as a cause of mortality and morbidity in a population that is ageing and undergoing profound changes in socioeconomic development and lifestyle. The cancers of high lethality that have been common in the Chinese population (liver, stomach, oesophagus) are showing some evidence of decline, at least in younger generations, but they remain major problems. At the same time, the cancers associated with economically ''developed'' societies-lung, colon-rectum and female breastare showing increases. The population-based cancer registry is an indispensable tool for providing data for planning and evaluation of programmes for cancer control in all societies. ' 2006 Wiley-Liss, Inc.

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Section: Discussionmentioning

confidence: 99%

Trends in the incidence of cancer in Qidong, China, 1978–2002

Chen

Zhu

Parkin

et al. 2006

Intl Journal of Cancer

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“…In recent decades, the incidence rates of cervical cancer showed a decreasing trend in many countries [2][3][4] . China, as a less developed country with huge population, the incidence and mortality rate of cervical cancer there was a decreasing trend in the period of 1970-1990 [5][6] . In Qidong, China, a relatively low incidence area of cervical cancer, there was a decreasing trend of incidence rate among aged women during the period of 1972-2000, according to population-based cancer registration data [7] .…”

Section: Introductionmentioning

confidence: 99%

Incidence and mortality trend of cervical cancer in 11 cancer registries of China

Tao

Mao

Liu

et al. 2011

Chin. J. Cancer Res.

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Objective: In many countries, the cervical cancer prevalence has declined but less information about the changes is available in China. This study aims to understand the epidemiological characteristics and trend of cervical cancer in China.Methods: Cervical cancer data of 11 cancer registries during 1988-2002 in China were analyzed. The age and urban/rural differences and trend of cervical cancer incidence and mortality were described and discussed.Results: During 1988-2002, a total of 6007 incidence cases and 3749 mortality cases of cervical cancer were reported in the 11 cancer registries. The incidence crude rate of cervical cancer was 3.80/100,000 and the world age adjusted rate was 2.78/100,000. In the same period, the mortality crude rate was 2.37/100,000 and the world age adjusted rate was 1.66/100,000. Declined incidence and mortality trends were observed during this period in urban as well as in rural areas. When calculating the rates by age group, we found that the declining trends were only for older women and increasing trends for younger women, especially for women in the rural areas. Conclusion:The incidence and mortality rates declined during the period of 1988-2002 in China for older women. The younger women showed an increasing trend during the same period, especially for women in rural area.

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“…Por meio destas figuras, pode-se visualizar que, apesar de a redução na mortalidade ter sido observada tanto para o conjunto dos dados quanto para cada patologia isoladamente, tal redução foi mais acentuada na mortalidade por câncer de útero porção não especificada. 4,5,6,7,8,9,10,11,13,16,17,18,19 , sugerindo melhora no acesso a métodos de diagnóstico e tratamento oportunos e adequados nos locais e períodos considerados.…”

Section: Resultsunclassified

“…Na província chinesa de Shandong, houve uma clara redução de mortalidade, de 21,11/100 mil no período de 1970-1974 para 5,57/100 mil no período de 1985-1989 13 . Em contraste, em Taiwan, a mortalidade aumentou de 6,06/100 mil em 1974 para 10,02/100 mil em 1993 14 .…”

Section: Introductionunclassified

Tendência de mortalidade por câncer de colo de útero para o Estado de Minas Gerais, Brasil, 1980-2005

2009

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Tem sido observada uma importante redução da mortalidade por esta neoplasia nas úl-timas décadas em países desenvolvidos, especialmente após a introdução dos programas de rastreamento da doença nas décadas de 1960 e 1970 2 . Estudos mostram tal redução em países europeus como Finlândia 4 , Islândia 5 , Bélgica 6,7 , Escócia 8 e Reino Unido 9 , contudo, tem sido observado um aumento na sua incidência nas faixas etárias mais jovens. Na Finlândia, por exemplo, foi evidenciado um decréscimo na mortalidade pela doença de cerca de 80% no período compreendido entre 1963-1995 4 . Em comum, estes paí-ses já apresentam um programa de rastreamento organizado há pelo menos três décadas.Nos Estados Unidos 10 e Canadá 11 , foi observada redução da mortalidade por câncer de colo uterino nas últimas décadas, apesar do aumento da incidência do adenocarcinoma de colo uterino 12 .ARTIGO ARTICLE

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The decline in the mortality rates of cervical cancer and a plausible explanation in Shandong, China

Cited by 17 publications

References 26 publications

Trends in the incidence of cancer in Qidong, China, 1978–2002

Trends in the incidence of cancer in Qidong, China, 1978–2002

Incidence and mortality trend of cervical cancer in 11 cancer registries of China

Tendência de mortalidade por câncer de colo de útero para o Estado de Minas Gerais, Brasil, 1980-2005

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