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1.
Improvements in the treatment of the cancers occurring among children and adolescents have resulted in a large number of patients achieving long-term survival. Treatment-related factors have been shown to have an impact on subsequent health status and quality of life, although there are limited data on survivors who are now 2 or more decades past treatment. The Childhood Cancer Survivor Study (CCSS) was established as a resource for investigating the long-term outcomes of a cohort of 5-year survivors of pediatric and adolescent cancer, who were diagnosed between 1970 and 1986. The CCSS consists of more than 14,000 active participants, including survivors of leukemia, brain tumors, Hodgkin's disease, non-Hodgkin's lymphoma, Wilms' tumor, neuroblastoma, soft-tissue sarcoma, and bone tumors, who have provided self-reported sociodemographicand health-related information. The survivor population has been found to be at increased risk of a broad spectrum of adverse outcomes, such as late mortality, second cancers, pulmonary complications, pregnancy loss, giving birth to offspring with low birth weights, and decreased educational attainment. The ongoing evaluation of large and diverse cohorts of cancer survivors, through resources such as the CCSS, will aid in further identifying high-risk individuals who should be the target of innovative intervention strategies.  相似文献   

2.
An analysis of changes in mortality from major cancer sitesand all cancer sites combined in 6 central European countries,considered as a Western group of countries [Germany (the formerFRG), Switzerland and Austria) and an Eastern group of countries(Poland, Czechoslovakia and Hungary) is presented. Cancer mortalityand population data have been obtained from the World HealthOrganization Mortality Database and are available over at least20 years. They have been analysed using age-period-cohort modelsand birth-cohort and time-period effects are presented graphically.The group of Eastern countries shows consistent and continuingincreases in male lung cancer risk in contrast to the patternin the group of Western countries, where after increases inolder cohorts, the risk has stabilized or gone down in malecohorts born after around 1910. Steady and continuous increaseshave been, in general, observed for women In both groups ofcountries. All tobacco- and alcohol-related cancers considereddemonstrate very similar patterns in men: an initial decreaseIn mortality by birth cohort with a subsequent Increase In morerecently born cohorts. While all the countries considered demonstratecontinuing decreases in stomach cancer risk for both sexes,cohort-based increases have been observed In Eastern countriesfor colorectal cancer, prostate cancer and female breast cancer.These results demonstrate the magnitude of the increasing mortalityfrom tobacco- and alcohol-related cancers In the countries consideredand emphasize the importance and potential of public healthmeasures In preventing such increases continuing in the future.  相似文献   

3.
Cancer survival continues to improve in high-income countries, partly explained by advances in screening and treatment. Previous studies have mainly examined the relationship between individual dietary components and cancer prognosis in tumours with good therapeutic response (breast, colon and prostate cancers). The aim of this review is to assess qualitatively (and quantitatively where appropriate) the associations of dietary patterns and cancer prognosis from published prospective cohort studies, as well as the effect of diet interventions by means of randomised controlled trials (RCT). A systematic search was conducted in PubMed, and a total of 35 prospective cohort studies and 14 RCT published between 2011 and 2021 were selected. Better overall diet quality was associated with improved survival among breast and colorectal cancer survivors; adherence to the Mediterranean diet was associated to lower risk of mortality in colorectal and prostate cancer survivors. A meta-analysis using a random-effects model showed that higher versus lower diet quality was associated with a 23% reduction in overall mortality in breast cancer survivors. There was evidence that dietary interventions, generally combined with physical activity, improved overall quality of life, though most studies were in breast cancer survivors. Further cohort and intervention studies in other cancers are needed to make more specific recommendations.  相似文献   

4.
金昌队列人群癌症疾病负担分析   总被引:5,自引:5,他引:0       下载免费PDF全文
目的 掌握金昌队列人群常见癌症的疾病负担,为制定该队列癌症防治措施、减轻癌症疾病负担提供基础数据。方法 收集金昌队列人群2001-2013年癌症全死因资料及2001-2010年癌症住院患者资料,应用死亡率、潜在减寿年(PYLL)、潜在工作损失年(WPYLL)、直接经济负担分析癌症造成的疾病负担。结果 该队列人群13年癌症平均死亡率顺位前5位为肺癌(78.06/10万)、胃癌(38.03/10万)、肝癌(37.23/10万)、食管癌(19.60/10万)、结直肠癌(9.53/10万);前5位恶性肿瘤PYLL(人年)、WPYLL(人年)依次为肺癌(3 480.33、1 161.00)、肝癌(2 809.03、1 475.00)、胃癌(2 120.54、844.00)、食管癌(949.61、315.00)、结直肠癌(539.90、246.00)。该队列10年恶性肿瘤人均例次住院费用依次为胃癌(8 102.23元)、食管癌(7 135.79元)、结直肠癌(7 064.38元)、乳腺癌(6 723.53元)、肺癌(6 309.39元)。结论 金昌队列人群疾病负担较重的前五位癌症为肺癌、胃癌、肝癌、食管癌、结直肠癌,其中尤以肺癌的疾病负担最重。  相似文献   

5.
This paper studies prostate cancer mortality in Italy from 1950–1979 to evaluate its importance in relation to total cancers, examine the time trend for forecasting future mortality trends, and makes an attempt to interpretate mortality by analyzing demographic and risk factors.In the Authors' opinion findings from cross-sectional rates, cohort analysis and Devesa-Schneiderman method, indicate that in Italy even if the age-adjusted mortality rate has nearly doubled over the period, as in many other countries, mortality can be expected to remain constant or decrease in the future, since the data to hand show a decreasing trend in some age cohorts.Corresponding author.  相似文献   

6.
Due to the considerably improved prognosis of childhood cancer, research regarding the long-term consequences has become highly valuable. The population-based German Childhood Cancer Registry forms the basis of the long-term follow-up of these patients. The cohort comprises over 25,000 patients (with malignant diseases before their 15th birthday) with a current address and who are neither deceased nor lost to follow-up. The current median age is 21 years and 500 individuals are already over 40 years old. All the long-term survivors are contacted every 5 years at the latest and are asked about possible long-term effects. Due to the continued improvement of the prognosis for childhood cancer over the years, such cohorts of long-term survivors have altered in their composition. Corresponding long-term follow-up studies can therefore not easily be compared to one another. This is illustrated by a nested case control study on the possible relationship between the occurrence of second tumors and the therapy undergone for the initial diagnosis. The cohort of long-term survivors in the German Childhood Cancer Registry is highly valuable both for research on long-term effects in Germany as well as for integration into international projects.  相似文献   

7.
Mortality of a municipal-worker cohort: IV. Fire fighters   总被引:3,自引:0,他引:3  
Morbidity and mortality studies of fire fighters have produced varied and inconsistent findings regarding the potential chronic effects of fire fighting including respiratory disease, cardiovascular disease, and cancer. The mortality experience of 1,867 white male fire fighters who were employed for the City of Buffalo a minimum of five years with at least one year as a fire fighter was studied. Vital status was determined for 99% of the cohort, resulting in 470 observed deaths. The fire fighter cohort was characteristic of a healthy worker population. All-cause mortality was close to the expected standardized mortality ratio (SMR) = 95, and significantly lower than expected mortality was seen for all external causes (SMR = 67)--in particular, for suicide (SMR = 21) and respiratory diseases (SMR = 48). Significantly elevated SMRs were found for benign neoplasms (SMR = 417), cancer of the colon (SMR = 183), and cancer of the bladder (SMR = 286). Cause-specific mortality is presented by number of years employed, calendar year of death, year of hire, and latency. Cancer mortality was significantly higher in the long-term fire fighters, and risk of mortality from all malignant neoplasms tended to increase with increasing latency. Patterns in risk of mortality among fire fighters for cancers of the bladder, colon, and brain are intriguing. Additional follow-up of this cohort and initiation of cancer morbidity studies would be helpful in further clarifying the potential long-term effects of fire fighting on cancer risk.  相似文献   

8.
Aims: To evaluate the mortality experience of a cohort of employees in the UK silica sand industry exposed to respirable crystalline silica (RCS).

Methods: A retrospective cohort mortality study followed all workers to 2001 with at least one year's employment at one of seven UK silica sand producing quarries between 1950 and 1986. Each worker was assigned a job category and cumulative exposure to RCS was estimated using a job-exposure matrix.

Results: A total of 764 deaths were identified in 2703 cohort members. The overall mortality rate for the cohort was lower than would be expected in the general population. Mortality from circulatory and respiratory disease was also less than expected, but death due to pneumoconiosis was slightly raised (two deaths). Mortality from all cancers was slightly decreased. Mortality was not raised in any job category. Cancer mortality was raised at one quarry due to a significant increase in lung (standardised mortality rate (SMR) 162.0, 95% CI 113.5 to 224.3) and bladder (SMR 366.5, 95% CI 167.6 to 695.7) cancers. Mortality from lung cancer and other causes did not show a trend with cumulative exposure to RCS.

Conclusions: This study did not show any consistent relation between RCS exposure (in the absence of other known carcinogens) and the development of lung cancer. This contrasts with a number of studies that have shown positive findings in similar and related industries.

  相似文献   

9.
BACKGROUND: The dramatic increase in mortality in Russia and Ukraine in the late 1980s and 1990s has been due to increases in certain causes of death, particularly cardiovascular disease and accidents and violence. In contrast, there has been a slight fall in mortality from cancer. METHODS: This paper presents an analysis of trends and patterns in cancer mortality and examines four possible explanations for its recent fall: changes in data collection; cohort effects; competing mortality from other causes of death; and improvements in health care. RESULTS: All contribute to some extent to the observed changes, with each affecting predominantly different age groups. There is evidence of a significant underrecording of cancer deaths among the elderly especially in rural areas and of significant changes in coding practices in the early 1990s. Competing mortality from cardiovascular diseases and accidents can explain some reduction in male deaths from cancer in middle age. Birth cohort effects can explain some reduction among males after early middle age and among females at all ages. The impact of changes in health care are more difficult to identify with certainty but there is evidence of reduced deaths from childhood leukaemia. IMPLICATIONS: Recent changes in mortality in Russia are complex and their understanding will require a multidisciplinary approach embracing demography, epidemiology and health services research.  相似文献   

10.
ObjectiveTo compare the incidence rates of gastric cancer among cancer survivors with those in the general population, and estimate the probability of a gastric second primary cancer being diagnosed 10 years after any other first primary cancer.MethodA cohort of first primary cancers (other than gastric) diagnosed in Northern Portugal between 2000 and 2006 (n = 64,648) was followed until 31/12/2012 for gastric second primary cancers. Incidence rates, standardized incidence ratios and the cumulative incidence of gastric second primary cancers were calculated.ResultsOverall, 330 patients developed gastric second primary cancers (21.2% within two months). The incidence rate of gastric second primary cancers was higher within two months of the first primary cancer (standardized incidence ratios: 5.20 in males and 7.89 in females), particularly among survivors of cancers of the oesophagus, colon and rectum, than in the remaining period (standardized incidence ratios: 0.64 in males and 0.74 in females). The 10-year risk of a gastric second primary cancer was 0.6% (males: 0.7%; females: 0.4%).ConclusionThe incidence rate of gastric second primary cancers among cancer survivors was higher than in the general population only soon after the first primary cancer, and lower thereafter. Despite the high mortality, the probability of a gastric second primary cancer within 10-years of the first primary cancer was 0.6%.  相似文献   

11.
The cohort of this historical prospective mortality study consisted of 697 male employees at a chlorination plant. A majority of the cohort was potentially exposed to benzotrichloride, benzyl chloride, benzoyl chloride, and other related chemicals. The mortality experience of the cohort was observed from 1943 through 1982. For the cohort as a whole, no statistically significant mortality excess was detected. The overall Standardized Mortality Ratio (SMR) was 100, and the SMR for all cancers combined was 122 (not significant). The respiratory cancer SMR for the cohort as a whole was 246 (7 observed vs. 2.8 expected). The excess was of borderline statistical significance, the lower 95% confidence limit being 99. Analysis by race showed that all 7 respiratory cancer deaths came from the white male employees, with an SMR of 265 (p less than 0.05). The respiratory cancer mortality excess was higher among employees in maintenance (SMR = 229) than among those in operations or production (SMR = 178). The lung cancer mortality excess among the laboratory employees was statistically significant (SMR = 1292). However, this observation should be viewed with caution, since it was based on only 2 deaths. Further analysis indicated that the respiratory cancer mortality excess was limited to the male employees with 15 or more years of employment (SMR = 379, p less than 0.05). Based on animal data as well as other epidemiologic studies, together with the internal consistency of analysis by length of employment, the data suggest an association between the chlorination process of toluene at the plant and an increased risk of respiratory cancer.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

12.
To study the incidence of and mortality from cancer among sewage workers a retrospective analysis was performed on a cohort of 656 men employed for at least one year at any one of 17 Swedish sewage plants during the years 1965-86. Assessment of exposure was done by classification of work tasks. Lower than expected total mortality (standardised mortality ratio (SMR) = 0.75, 95% confidence interval (95% CI) 0.58-0.97) and cardiovascular mortality (SMR = 0.61, 95% CI 0.39-0.91) was found. This was interpreted as a result of the healthy worker effect. For all cancers combined the mortality (SMR = 1.08, 95% CI 0.68-1.67) and morbidity (SMR = 1.02, 95% CI 0.72-1.38) were comparable with those of the general population. There were increased incidences for brain tumours (SMR = 2.19, 95% CI 0.45-6.39), gastric cancers (SMR = 2.73, 95% CI, 1.00-5.94), and renal cancers (SMR = 1.68, 95% CI = 0.35-4.90). For lung cancer the risk was reduced (SMR = 0.70, 95% CI 0.15-2.05). Allowance for a latency period of 10 years from the start of exposure did not change the pattern. Logistic modelling was used to search for exposure-response relations. In a logistic model with the confounder age forced in, renal cancer had a significant positive relation with a weighted sum of employment times, where the weights describe the classification of exposure. No exposure-response relations were found for brain tumors or gastric cancers. The increased risks are based on small numbers of cases. A future follow up will add more conclusive power to the study. Specific exposures need to be identified to allow for a better dose-response analysis.  相似文献   

13.
Little is known about the late and long term effects of having survived cancer and its treatments. A cancer survivor registry with a representative longitudinal cohort of survivors from all types of cancers would facilitate the study of these effects. A group of researchers, cancer survivors and cancer registrars used hospital cancer registries to identify cancer survivors diagnosed from 1990 through 2006. All eligible cancer survivors were invited to participate in a cancer survivor registry. We describe our methods for engaging the community, who responded to the invitation and who agreed to participate. We used Chi square tests with a significance level of .05 to assess associations with response and participation rates. We used logistic regression to examine associations with participation after adjustment for the effect of age. Logistic regression was also used to assess the independent effects of those variables that were significantly associated with participation after adjustment for age. Of the 6031 eligible survivors, 55% responded to the invitation. Of those who responded 61% agreed to participate in the cancer survivor registry for an overall participation rate of 33%. Rural residence, less education, full time employment, and lower income were independently related to not participating, but marital status was not associated with participation after adjustment for these variables. It is very difficult to recruit a representative sample of cancer survivors to participate in a cancer survivor registry. More research on how to engage the underserved population (rural residents, less education and lower income) is warranted.  相似文献   

14.
The mortality experienced by a cohort of 10,491 United Kingdom steel foundry workers during the period 1946-85 has been investigated. These workers were all male operatives first employed in any one of the 10 participating foundries in 1946-65; all had worked in the industry for a minimum period of one year. Compared with the general population of England and Wales, statistically significant excesses relating to cancer mortality were found for cancer of the stomach (E = 77.4, O = 106, SMR = 137) and cancer of the lung (E = 229.2, O = 441, SMR = 147). A statistically significant deficit was found for cancer of the brain (E = 19.4, O = 10, SMR = 51). Involvement of occupational exposures was assessed by the method of regression models and life tables (RMLT). This method was used to compare the duration of employment in the industry, in "dust exposed" jobs, in "fume exposed" jobs, in foundry area jobs, in fettling shop jobs, and in foundry area or fettling shop jobs, of those dying from cancers of the stomach and lung with those of all matching survivors. The RMLT analyses provided evidence of an occupational involvement in the risk of death from lung cancer from work in the foundry area or fettling shop, and weaker evidence of an occupational involvement in the risk of death from stomach cancer from work in the foundry area.  相似文献   

15.
Commercial airline pilots are exposed to cosmic radiation and other specific occupational factors, potentially leading to increased cancer mortality. This was analysed in a cohort of 6,000 German cockpit crew members. A mortality follow-up for the years 1960-2004 was performed and occupational and dosimetry data were collected for this period. 405 deaths, including 127 cancer deaths, occurred in the cohort. The mortality from all causes and all cancers was significantly lower than in the German population. Total mortality decreased with increasing radiation doses (rate ratio (RR) per 10 mSv: 0.85, 95 % CI: 0.79, 0.93), contrasting with a non-significant increase of cancer mortality (RR per 10 mSv: 1.05, 95 % CI: 0.91, 1.20), which was restricted to the group of cancers not categorized as radiogenic in categorical analyses. While the total and cancer mortality of cockpit crew is low, a positive trend of all cancer with radiation dose is observed. Incomplete adjustment for age, other exposures correlated with duration of employment and a healthy worker survivor effect may contribute to this finding. More information is expected from a pooled analysis of updated international aircrew studies.  相似文献   

16.
The mortality experienced by a cohort of 10,491 United Kingdom steel foundry workers during the period 1946-85 has been investigated. These workers were all male operatives first employed in any one of the 10 participating foundries in 1946-65; all had worked in the industry for a minimum period of one year. Compared with the general population of England and Wales, statistically significant excesses relating to cancer mortality were found for cancer of the stomach (E = 77.4, O = 106, SMR = 137) and cancer of the lung (E = 229.2, O = 441, SMR = 147). A statistically significant deficit was found for cancer of the brain (E = 19.4, O = 10, SMR = 51). Involvement of occupational exposures was assessed by the method of regression models and life tables (RMLT). This method was used to compare the duration of employment in the industry, in "dust exposed" jobs, in "fume exposed" jobs, in foundry area jobs, in fettling shop jobs, and in foundry area or fettling shop jobs, of those dying from cancers of the stomach and lung with those of all matching survivors. The RMLT analyses provided evidence of an occupational involvement in the risk of death from lung cancer from work in the foundry area or fettling shop, and weaker evidence of an occupational involvement in the risk of death from stomach cancer from work in the foundry area.  相似文献   

17.
A historical cohort mortality study was conducted in three neighborhoods of Essex County, New Jersey, to investigate the mortality patterns of persons who had inhabited 45 homes documented to be contaminated by radon gas emanating from radium processing waste. Residency history and vital status were collected for 752 persons, comprising 91% of the subjects enumerated who had resided in the index homes for at least one year during the years 1923-1983. Standardized mortality ratios (SMR) were used to compare the death rates of the study group with the death rates of the United States and New Jersey. While there were no statistically significant excesses of lung cancer for the cohort or its subgroups, an elevated mortality rate for lung cancer was found for white males in the comparison of lung cancer mortality rates in the United States (SMR = 1.5, 95% confidence interval (CI) 0.7-2.7) and New Jersey (SMR = 1.7, 95% CI 0.8-3.2). No excess of lung cancer was observed in females or nonwhites. The small size of the cohort and the inability to collect smoking histories or complete occupational data limited the study. Nevertheless, the degree of excess lung cancer among white males was in agreement with both the attributable and relative risk estimates per unit of exposure derived for radon from mining studies.  相似文献   

18.
Blood donors have made important contributions to research, most notably in cross-sectional seroprevalence studies. The proposed New Zealand Blood Donors Health Study is a prospective cohort study of 30,000 New Zealand donors designed to investigate the determinants of common injuries, cardiovascular disease and cancer. While robust from an analytic perspective, the execution of prospective cohort studies in many settings is impeded by methodological, economic and organisational barriers. We examined the operational considerations of implementing a large-scale cohort study at a transfusion centre and evaluated measures taken to optimise data collection procedures. A pilot study of 1,000 participants revealed donor motivation to participate in this research was high (91% response rate). Comprehensive exposure data on lifestyle, behavioural and psychosocial factors were obtained from 95% of participants. Substantial heterogeneity in levels of potential risk factors was noted among respondents. Detailed dietary habit information and a study blood sample were obtained from 67% and 100% of participants, respectively. Study recruitment and baseline data collection was feasible during routine donor visits with minimal interruption to donor centre staff and procedures. We conclude the study design and characteristics of the regional donor program enhance the efficiency and significance of the proposed research.  相似文献   

19.
Studies of cancer incidences among occupational cohorts are rarely performed in the United States because of incomplete registration and a limited time period available for follow-up. This study used data from concurrent studies of cancer mortality and incidence among a cohort of 4,528 fire fighters and police officers employed by the cities of Seattle and Tacoma, Washington, between 1944 and 1979 to examine the relative advantages of tumor registry and death certificate information. As expected, an increased ability to study relatively common cancers with low fatality rates was demonstrated using incidence data. The most dramatic example was seen for bladder cancer. Twenty-four bladder cancers had been diagnosed among the study cohort between 1974 and 1989, whereas only two deaths were attributed to this malignancy. The standardized incidence ratio for bladder cancer was 1.05 (95% confidence interval 0.67-1.55), whereas the corresponding standardized mortality ratio was 0.46 (95% confidence interval 0.05-1.65). The observed relative risk estimates for rapidly fatal cancers were similar using the two sources of information, and no increase in precision was observed. Of 142 persons in the registry area who died of cancer during the study period, 20 (14%) had a different site listed on the death certificate than was identified by the registry. Approximately 7% of the potential person-years of follow-up were lost due to migration out of the registry area; loss to follow-up was greater among older and short-term workers, but did not exceed 13% of the person-years. Population-based tumor registries can be a useful resource in the investigation of occupational cancer in the United States, especially for the study of cancers with high survival rates.  相似文献   

20.
A study was carried out to analyse trends in cancer mortality sex differentials. This study compared age-standardized sex ratio values for mortality from 18 cancers (or groups of cancers), and total cancer mortality over the period 1950-1989 in 24 European countries, for 4 age groups (all ages, 20-44 years, 45-64 years, and 65 years and over). For lung cancer and other tobacco-related neoplasms, appreciable rises in sex ratio values were observed until the late 1970s, particularly in Southern and Eastern Europe, before levelling off in recent years, particularly among the younger age groups. In the late 1980s, the range of variation in overall age-standardized sex ratios for lung cancer was between 2 and 3 in the United Kingdom and in Nordic countries, and around or over 10 in Southern Europe. In young adults, the decline in sex ratio values observed in Denmark and Sweden (unity), and in other Nordic countries and in the United Kingdom (around or below 2) reflects a levelling of lung cancer in young males and an increase in young females. This clearly indicates that young women are a priority target group for smoking control interventions in Europe. Appreciable cohort effects were also observed for stomach cancer: rises in sex ratio values were greater in, or restricted to, middle- and older age groups, whereas in the young there was some tendency towards a levelling in sex differentials. The overall sex ratio values for stomach cancer were around 2 in most areas of Europe in the late 1980s. For intestinal cancer, sex ratio values showed some tendency to rise, reaching a level of 1.3-1.7 in the late 1980s; steady rises were also registered in sex ratio values for melanoma (skin cancer), reaching 1.5-1.8 in the late 1980s in most countries. These upward trends which were minor or inconsistent at younger ages in several countries became progressively stronger with advancing age. Sex ratio values were below unity for cancers of the gallbladder and the thyroid. Sex ratio values tended to rise also for leukaemia (from 1.2-1.5 to 1.5-1.7), but showed no noticeable trend for lymphomas or myeloma. The overall sex ratio values for total cancer mortality in the 1950s were between 1.2 and 1.4 in most European countries. Thereafter, they rose appreciably in several countries, reaching 1.9 in Czechoslovakia, Italy and Poland, and 2.3 in France.(ABSTRACT TRUNCATED AT 400 WORDS)  相似文献   

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