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1.
BACKGROUND: Cancer prevalence-the proportion of people in a population with a diagnosis of cancer-includes groups with widely differing cancer care needs. We estimated the proportions of the prevalent colon cancer cases requiring initial care, terminal care and follow-up. PATIENTS AND METHODS: Prevalence by year since diagnosis was estimated from incidence and vital status data on 243,471 colon cancer cases collected by EUROPREVAL from 36 European population-based cancer registries. The proportions of cured and fatal cases were estimated by applying 'cure' survival models to the dataset. The proportion of recurrence-free cases was estimated by analysis of a representative sample of 278 colon cancer patients from the Lombardy Cancer Registry (LCR), northern Italy. RESULTS: The proportions of total prevalence requiring initial care was estimated at 12% in the LCR and 10% in Italy and Europe. Recurrence-free patients formed 89% of the total prevalence in the LCR and 91% in Italy and Europe. Eleven per cent (LCR) and 9% (Italy, Europe) of the total prevalence had recurred and consisted of patients in the terminal phase of their illness. CONCLUSIONS: In 1992, 660,000 people were living with a diagnosis of colon cancer in Europe. We have estimated the proportions of this prevalence requiring particular types health care in the years following diagnosis, providing data useful for planning the allocation of health-care resources.  相似文献   

2.
《Annals of oncology》2013,24(6):1660-1666
BackgroundComplete cancer prevalence data in Europe have never been updated after the first estimates provided by the EUROPREVAL project and referred to the year 1993. This paper provides prevalence estimates for 16 major cancers in Europe at the beginning of the year 2003.Patients and methodsWe estimated complete prevalence by the completeness index method. We used information on cancer patients diagnosed in 1978–2002 with vital status information available up to 31 December 2003, from 76 European cancer registries.ResultsAbout 11.6 millions of Europeans with a history of one of the major considered cancers were alive on 1 January 2003. For breast and prostate cancers, about 1 out of 73 women and 1 out of 160 men were living with a previous diagnosis of breast and prostate cancers, respectively. The demographic variations alone will increase the number of prevalent cases to nearly 13 millions in 2010.ConclusionsSeveral factors (early detection, population aging and better treatment) contribute to increase cancer prevalence and push for the need of a continuous monitoring of prevalence indicators to properly plan needs, resource allocation to cancer and for improving health care programs for cancer survivors. Cancer prevalence should be included within the EU official health statistics.  相似文献   

3.
BACKGROUND: Cancer incidence, mortality and survival statistics for the UK are routinely available; however, data on prevalence, which is generally regarded as an important measure for health planning and resource allocation, are relatively scarce. MATERIALS AND METHODS: Eight cancer registries in the UK, covering more than half the population, provided data based on >1.5 million cases of cancer. Total prevalence was calculated using methods developed for the EUROPREVAL study, based on modelling incidence and survival trends. The prevalence of cancers of the stomach, colon, rectum, lung, breast (in females), cervix uteri, corpus uteri and prostate, melanoma of skin, Hodgkin's disease, leukaemia and all malignant neoplasms combined, was estimated for the UK for the end of 1992. RESULTS: Overall, approximately 1.5% of males and 2.5% of females in the UK population at the end of 1992 were living with a diagnosis of cancer. These proportions increased steeply with age, with approximately 7.5% (7.3% and 7.8%, in males and females, respectively) of people aged > or =65 years living with a diagnosis of cancer. Of the individual cancers, by far the highest prevalence (almost 1%) was seen for breast cancer in females; more than one in three of all living female cancer patients had been diagnosed with breast cancer. For males, around half of prevalent cases had been diagnosed >5 years previously and 30% >10 years previously; for females, these figures were both higher, at approximately 60% and 40%, respectively. CONCLUSIONS: The estimates of prevalence presented here comprise: recently diagnosed patients in need of treatment and monitoring; long-term survivors, some of whom will nevertheless eventually die from the cancer, while others may be cured of the disease; and patients in the terminal phase who are dying from the cancer. Further work should attempt to identify the proportions of patients in the different phases of care in order to optimise the use of prevalence estimates in health care planning.  相似文献   

4.
A comparative analysis of cancer prevalence in France, Spain and Italy is presented as part of the EUROPREVAL project. The three countries are culturally and sociologically relatively homogeneous compared with Europe as a whole. However, in all three countries, the cancer registries (CRs) providing the data for prevalence calculation cover only small fractions of the populations, and have been operating for relatively short periods. This leads to problems of representativity and to prevalence underestimates as surviving cases diagnosed before operation of the CR are not recorded. Partial prevalences obtained directly from CR data were therefore corrected using a completeness index obtained by modelling to provide estimates of the complete prevalence. For CRs operating for only 5 years, only approximately half the prevalence was observed. Thus, due to the rather recent start of most of southern European CRs, the role of correction is very important. The prevalence of all cancers was highest in Italy for women and in France for men, while lowest in Spain. Differences in the age structures of the populations were the major cause of these discrepancies and after age adjustment only the prevalence of stomach cancer remained highest in Italy, although differences in incidence also contributed to the prevalence differences. Survival varied little between the three countries and differences in incidence are more important determinants of prevalence. Prevalence of cancer in the elderly represents an increasing load for the community, particularly for France, Italy and Spain due to the ageing population in these countries. Elderly patients with cancer frequently suffer from problems of co-morbidity and disability factors, thus placing a burden on the local medical system where this proportion is high. Prevalent cases diagnosed 1-5 years before the prevalence date formed approximately one-third of the total prevalence, with higher proportions for melanoma, and prostate cancer in males and breast and colorectal cancer in females, and lower proportions for uterine cancer. This subset of the prevalent population consists of those probably on intensive follow-up, or being treated for cancer recurrence or sequelae to primary therapy.  相似文献   

5.
Cancer prevalence in European registry areas.   总被引:3,自引:0,他引:3  
BACKGROUND: Information on cancer prevalence is of major importance for health planning and resource allocation. However, systematic information on cancer prevalence is largely unavailable. MATERIALS AND METHODS: Thirty-eight population-based cancer registries from 17 European countries, participating in EUROPREVAL, provided data on almost 3 million cancer patients diagnosed from 1970 to 1992. Standardised data collection and validation procedures were used and the whole data set was analysed using proven methodology. The prevalence of stomach, colon, rectum, lung, breast, cervix uteri, corpus uteri and prostate cancer, as well as of melanoma of skin, Hodgkin's disease, leukaemia and all malignant neoplasms combined, were estimated for the end of 1992. RESULTS: There were large differences between countries in the prevalence of all cancers combined; estimates ranged from 1170 per 100000 in the Polish cancer registration areas to 3050 per 100000 in southern Sweden. For most cancers, the Swedish, Swiss, German and Italian areas had high prevalence, and the Polish, Estonian, Slovakian and Slovenian areas had low prevalence. Of the total prevalent cases, 61% were women and 57% were 65 years of age or older. Cases diagnosed within 2 years of the reference date formed 22% of all prevalent cases. Breast cancer accounted for 34% of all prevalent cancers in females and colorectal cancer for 15% in males. Prevalence tended to be high where cancer incidence was high, but the prevalence was highest in countries where survival was also high. Prevalence was low where general mortality was high (correlation between general mortality and the prevalence of all cancers = -0.64) and high where gross domestic product was high (correlation = +0.79). Thus, the richer areas of Europe had higher prevalence, suggesting that prevalence will increase with economic development. CONCLUSIONS: EUROPREVAL is the largest project on prevalence conducted to date. It has provided complete and accurate estimates of cancer prevalence in Europe, constituting essential information for cancer management. The expected increases in prevalence with economic development will require more resources; allocation to primary prevention should therefore be prioritised.  相似文献   

6.
Cancer prevalence is a crucial indicator that allows the magnitude of the problem of colorectal cancer to be monitored. Population-based cancer registries with long-standing activity are the most appropriate tools for providing prevalence data. All colorectal cases registered between 1976 and 1995 in the C?te d'Or Cancer Registry have been considered in this study. Total prevalence (20 years) was the number of patients with a previously diagnosed colorectal cancer, alive on 31 December 1995. Cumulative recurrence rates up to 5 years after diagnosis were calculated and applied to the number of prevalent cases to estimate the number of recurrences by one-year intervals up to 5 years. The overall age-standardized prevalence rate was 170.8/100000, which yielded an estimated 185857 French people alive with a history of colorectal cancer. The 5-year prevalence rates were 149.4/100000, which represented 46.4% of prevalent cases. Five-year prevalence rates regularly increased with periods of diagnosis. These results represent useful indicators for monitoring the colorectal cancer problem and for health care planning.  相似文献   

7.
Cancer statistics in China, 2015   总被引:4,自引:0,他引:4       下载免费PDF全文
With increasing incidence and mortality, cancer is the leading cause of death in China and is a major public health problem. Because of China's massive population (1.37 billion), previous national incidence and mortality estimates have been limited to small samples of the population using data from the 1990s or based on a specific year. With high‐quality data from an additional number of population‐based registries now available through the National Central Cancer Registry of China, the authors analyzed data from 72 local, population‐based cancer registries (2009‐2011), representing 6.5% of the population, to estimate the number of new cases and cancer deaths for 2015. Data from 22 registries were used for trend analyses (2000‐2011). The results indicated that an estimated 4292,000 new cancer cases and 2814,000 cancer deaths would occur in China in 2015, with lung cancer being the most common incident cancer and the leading cause of cancer death. Stomach, esophageal, and liver cancers were also commonly diagnosed and were identified as leading causes of cancer death. Residents of rural areas had significantly higher age‐standardized (Segi population) incidence and mortality rates for all cancers combined than urban residents (213.6 per 100,000 vs 191.5 per 100,000 for incidence; 149.0 per 100,000 vs 109.5 per 100,000 for mortality, respectively). For all cancers combined, the incidence rates were stable during 2000 through 2011 for males (+0.2% per year; P = .1), whereas they increased significantly (+2.2% per year; P < .05) among females. In contrast, the mortality rates since 2006 have decreased significantly for both males (?1.4% per year; P < .05) and females (?1.1% per year; P < .05). Many of the estimated cancer cases and deaths can be prevented through reducing the prevalence of risk factors, while increasing the effectiveness of clinical care delivery, particularly for those living in rural areas and in disadvantaged populations. CA Cancer J Clin 2016;66:115–132. © 2016 American Cancer Society.  相似文献   

8.
Zanetti R  Micheli A  Rosso S  Sant M 《Tumori》1999,85(5):408-413
AIMS AND BACKGROUND: Cancer prevalence in a population, defined as the proportion - or the number - of people who were diagnosed with a cancer during their lives and are still alive at a given date, is a crucial indicator for heath care planning and resource allocation. Long-term population-based cancer registries (CR) are the appropriate tools to produce prevalence figures, which, however, are scarcely available. This paper contains a review up to 1999 of the published data world-wide (reports and articles) on cancer prevalence: including measured and estimated figures. MATERIALS AND METHODS: Data on cancer prevalence from CRs are available for the Nordic countries, Connecticut, and Italy. In addition, electronic data are available for the European Union (EU). Data for the Nordic countries were first published in the mid-seventies, reporting the prevalence for 1970. The first data from Connecticut were available 10 years later. Estimates for all EU countries were published by the International Agency for Research on Cancer (IARC) in 1997. In Italy, observed and estimated data on the prevalence of respiratory and digestive tract cancer and breast cancer have been published during the nineties, followed by a systematic analysis for all cancers in 1999. By using information obtained from CRs, cancer prevalence data were calculated directly (observed prevalence) by means of incidence and follow-up information on individual cancer patients, or indirectly (estimated prevalence) by means of mathematical models, which generally use epidemiological information at the aggregate level. RESULTS: Cancer prevalence for all cancers combined (proportions per 100,000 inhabitants) showed values of less than 700 in males and less than 800 in females in 1970 (Finland) to over 2,300 in males and over 3,000 in females in 1992 (Italian registries). With few exceptions, in each country and period considered the cancer sites contributing most to cancer prevalence are lung, colon-rectum, prostate and bladder in males, colon-rectum, breast, uterus (both cervix and corpus) and ovary in females. At present, comparison of measurements from different areas is difficult because there exists no standardized mode of presentation. CONCLUSIONS: In spite of their being potentially useful for health care planning, prevalence data have been produced inconsistently and late by cancer registries, at least in comparison with the systematic availability of incidence and survival statistics. The available data can be compared only to a limited extent due to differences in completeness, in the choice of indicators, in the standard populations, and in the frequency of publication. It would be desirable that in the future data will be produced systematically, with a higher level of standardization compared to the past, and, most importantly, on the same geographic and administrative scale as health-care decision-making.  相似文献   

9.
BackgroundCancer prevalence is a basic indicator of the cancer burden in a population and essential to estimate the resources needed for care of cancer patients. This paper provides a prevalence estimate for 2002 and 2012 in France and an assessment of the trend in prevalence over the period 1993–2002.MethodIncidence and survival data from French cancer registries were used to estimate specific 5-year partial prevalence rates that were then applied to the whole French population.ResultsIn 2002, the 5-year partial prevalence was over 427,000 in men and 409,000 in women. The most frequent cancer site among men was prostate (35% of the cases) and breast in women (45% of the cases). In 2002, in France, more than 3.5% of men over 74 years old are alive with a prostatic cancer diagnosed within 5 years. The increase in the number of cases between 1993 and 2002 was about 40% and was mainly due to prostate and breast cancers. The demographic variations alone induce an increase of the number of prevalent cases of 75,000 among men and 54,500 among women if both incidence and survival are considered as stable during the period 2002–2012.ConclusionThis study uses a large amount of information from cancer registries which makes it possible to assess the cancer burden. Five-year prevalence is very sensitive to changes in incidence and demographic changes. Prevalence has to be estimated regularly in order to ensure accurate medical care meets demand.  相似文献   

10.
Comorbid diabetes mellitus has been shown to be associated with outcomes among cancer patients, but population-based data have been limited to elderly patients through linkages between the US National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) Program database and Medicare databases. Reporting of comorbidity to the population-based Connecticut SEER registry is not required, but the extent of voluntary reporting of comorbid diabetes was assessed in this preliminary study. Of 15,145 Connecticut residents diagnosed at age 20+ years with invasive cancer in 2006, who were ascertained from 33 registry sources, 8688 (57.4%) from 21 sources were included in the analysis of comorbid diabetes. The prevalence of comorbid diabetes was 12.5%, and was lowest for patients with prostate cancer (8.5%) and highest for with liver-pancreas cancer (25.9%), consistent with the literature. Diabetes prevalence was substantial (9.5%) within the non-elderly subgroup aged 20-64 years at cancer diagnosis who comprised 45% of the 8688 patients. These results indicate an opportunity for future large-scale studies of the impact of diabetes on outcomes among all newly diagnosed cancer patients (both non-elderly and elderly) in the Connecticut SEER registry and other US central cancer registries.  相似文献   

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