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1.
PurposeTo compare information from self-report and electronic medical records for four common comorbidities (diabetes, hypertension, myocardial infarction, and other heart diseases).MethodsWe pooled data from two multiethnic studies (one case–control and one survivor cohort) enrolling 1,936 women diagnosed with breast cancer, who were members of Kaiser Permanente Northern California.ResultsConcordance varied by comorbidity; kappa values ranged from 0.50 for other heart diseases to 0.87 for diabetes. Sensitivities for comorbidities from self-report versus medical record were similar for racial/ethnic minorities and non-Hispanic Whites, and did not vary by age, neighborhood socioeconomic status, or education. Women with a longer history of comorbidity or who took medications for the comorbidity were more likely to report the condition. Hazard ratios for all-cause mortality were not consistently affected by source of comorbidity information; the hazard ratio was lower for diabetes, but higher for the other comorbidities when medical record versus self-report was used. Model fit was better when the medical record versus self-reported data were used.ConclusionsComorbidities are increasingly recognized to influence the survival of patients with breast or other cancers. Potential effects of misclassification of comorbidity status should be considered in the interpretation of research results. 相似文献
2.
In women, breast cancer is the most frequent solid tumor and the second leading cause of cancer death. Differences in survival of breast cancer have been noted among racial/ethnic groups, but the reasons are unclear. This report presents the characteristics and the survival experience of four racial/ethnic groups and evaluates the effects of stage, age, histology, and treatment on survival time. The distributions of prognostic factors and treatment among racial/ethnic groups are compared using female breast cancer patients from two population-based registries in Southern California. The main end points are observed survival time and survival by cause of death. The Cox model is used to estimate the relative risk of death in three minority groups compared with non-Hispanic whites, while controlling for several covariates. Breast cancer cases included in this study were 10,937 non-Hispanic whites, 185 blacks, 875 Hispanics, and 412 Asians. The median follow-up period was 76 months (range: 48-132). The median age at diagnosis was 64 years among non-Hispanic whites, 55 years among Hispanics (p = 0.001), 52 years among blacks (p = 0.001), and 50 years among Asians (p = 0. 001). There was more localized disease among non-Hispanic whites (61. 4%) than among blacks (50.8%) and Hispanics (52.2%), but not compared to Asians (59.7%). After controlling for stage, age, histology, treatment, and registry, overall survival significantly differed between non-Hispanic whites and blacks [relative risk (RR) = 2.27, 95% confidence interval (95% CI) 1.82-2.84) and between non-Hispanic whites and Hispanics (RR = 1.18, 95% CI 1.04-1.34). The same results were found for breast cancer death in blacks (RR = 2.32, 95% CI 1.76-3.07) and Hispanics (RR = 1.28, 95% CI 1.10-1.50). We found no difference between Asians and non-Hispanic whites in overall and cancer-related survival. These results show that stage of disease, age at diagnosis, histologic features and treatment for breast cancer differed among racial/ethnic groups. Moreover, black women, in particular, and Hispanic women with breast cancer had a higher risk of death compared to non-Hispanic white women, even after controlling for prognostic factors. These findings underline the necessity of improved screening and access to appropriate treatment among minority women for breast cancer. 相似文献
3.
BACKGROUND: The reasons for race/ethnicity (R/E) differences in breast cancer survival have been difficult to disentangle. METHODS: Surveillance, Epidemiology, and End Results (SEER)-Medicare data were used to identify 41,020 women aged > or =68 years with incident breast cancer between 1994-1999 including African American (2479), Hispanic (1172), Asian/Pacific Island (1086), and white women (35,878). A Cox proportional hazards model assessed overall and stage-specific (0/I, II/III, and IV) R/E differences in breast cancer survival after adjusting for mammography screening, tumor characteristics at diagnosis, biologic markers, treatment, comorbidity, and demographics. RESULTS: African American women had worse survival than white women, although controlling for predictor variables reduced this difference among all stage breast cancer (hazards ratio [HR], 1.08; 95% confidence interval [95% CI], 0.97-1.20). Adjustment for predictors reduced, but did not eliminate, disparities in the analysis limited to women diagnosed with stage II/III disease (HR, 1.30; 95% CI, 1.10-1.54). Screening mammography, tumor characteristics at diagnosis, biologic markers, and treatment each produced a similar reduction in HRs for women with stage II/III cancers. Asian and Pacific Island women had better survival than white women before and after accounting for all predictors (adjusted all stages HR, 0.61 [95% CI, 0.47-0.79]; adjusted stage II/III HR, 0.61 [95% CI, 0.47-0.79]). Hispanic women had better survival than white women in all and stage II/III analysis (all stage HR, 0.88; 95% CI, 0.75-1.04) and stage II/III analysis (HR, 0.88; 95% CI, 0.75-1.04), although these findings did not reach statistical significance. There was no significant difference in survival by R/E noted among women diagnosed with stage IV disease. CONCLUSIONS: Predictor variables contribute to, but do not fully explain, R/E differences in breast cancer survival for elderly American women. Future analyses should further investigate the role of biology, demographics, and disparities in quality of care. 相似文献
4.
Background This study was undertaken to determine the absolute and relative value of angiogenesis, proliferating cell nuclear antigen
(PCNA) and conventional prognostic factors in predicting relapse-free survival (RFS) and overall survival (OS) rates associated
with long-term survival in Japanese patients with node-negative breast cancer.
Patients and Methods Two hundred patients with histological node-negative breast cancer were studied. We investigated nine clinicopathological
factors, including angiogenesis, PCNA using permanent-section immunohistochemistry, clinical tumor size, histological grade
(HG), tumor necrosis, lymphatic vessel invasion (LVI), histological extension, histological classification, and infiltrating
growth (INF), followed for a median of 10 years (range, 1 to 20).
Results Twenty-one patients (10.5%) had recurrence and 15 patients (7.5%) died of breast cancer. Univariate analysis showed that PCNA,
clinical tumor size, HG, angiogenesis, and LVI were significantly predictive of 20-year RFS or OS. Tumor necrosis was significantly
predictive of OS, not of RFS. Multivariate analysis showed that clinical tumor size (P=0.0003), angiogenesis (P=0.0003), PCNA
(P= 0.0064), and HG (P=0.0401) were significant independent prognostic factors for RFS. PCNA (P< 0.0001) and clinical tumor
size (P=0.0112) were significant independent prognostic factors for OS, while angiogenesis was a borderline significant factor.
Conclusion PCNA and angiogenesis were important new prognostic factors in node-negative breast cancer patients. 相似文献
5.
The purpose of this study was to describe hormone receptor status and analyze the effect of receptors on survival from breast cancer. Comparisons were made between African–American and Caucasian racial categories. Breast cancer data from 1990 through 1997 collected by the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) Program were analyzed. Subjects were 993 Caucasian men, 12,303 African–American women, and 141,045 Caucasian women. The number of African–American men was too small to analyze separately ( n=93). In addition to analysis of estrogen and progesterone receptor status by sex and race, tumor and patient characteristics included age, stage at time of diagnosis, and tumor histology. The proportion of Caucasian men with hormone receptor positive tumors remained relatively high and stable for all ages. In women, the proportion of hormone receptor positive tumors increased with age, with African–American women having the highest proportion of hormone receptor negative tumors. Caucasian men had highest proportions of hormone receptor positive tumors in all histology and stage groups, while African–American women had lowest proportions of hormone receptor positive tumors in all stage and histologic categories. Survival for African–American women was significantly worse for each hormone receptor category. In multivariate analyses, race was a significant independent predictor of survival, but sex was not. Although reasons for differences in hormone receptor status by sex and race are unknown, several hypotheses are discussed with respect to differences in tumor histopathology and risk factors. 相似文献
6.
Background In Gipuzkoa, screening for breast cancer was initiated in 1997 and in this paper we present breast cancer characteristics
and survival for women diagnosed during the pre-screening period.
Methods All cases diagnosed during 1995–1996 were included and the tumour characteristics were analysed. One-, five- and ten-year
observed and relative survival (RS) were estimated overall, as well as by age and tumour characteristics. Multiple regression
models were used to evaluate the effect of tumour characteristics on ten-year RS.
Results Six hundred and twenty-two cases with a mean age of 60.7±15 years were included. The mean follow-up was 7.5 years (max. 10)
with a mortality of 40.5%. Ductal carcinoma accounted for 78% of all cases; almost 50% had good or moderate differentiation
and 28% were positive for both hormone receptors studied. Nearly 80% of cases were diagnosed in stage I or II and breast-conserving
surgery was employed more often than mastectomy. Age-standardised RS was 77% (95% CI 72.1-82.3) and 68% (95% CI 60.4–74.6),
five and ten years after diagnosis respectively. The relative excess risk of death was significantly different only for age,
stage and degree of differentiation.
Discussion This study shows an increase in survival compared to previous studies in the region. This could be explained by advances in
diagnosis and treatment, as demonstrated by younger age and earlier stage at diagnosis and by the therapy profiles. Age and
stage were shown to be major predictors of survival in our study and adjustment for the other factors had only limited effects
on the risk of death for these two variables. 相似文献
7.
Objective: The purpose of this study was to identify factors that could explain breast cancer underutilization among women age 40 and older with disabilities. Methods: The data are part of the 1996 Medical Expenditure Panel Survey (MEPS), a nationally representative sample of medical care use and expenditures in the United States. Two different definitions of disability were used: limitations in activities of daily living (ADL) and limitations in instrumental activities of daily living (IADL). Annual mammography was used as the outcome measure. The data are restricted to noninstitutionalized women at least 40 years of age. Results: Crude odds ratios showed that women with long-term limitations in their ADLs or IADLs were less likely to be screened for breast cancer compared to those without such limitations. These associations remained while controlling for possible confounders and were observed among women age 40 or older, those 50–69, and among women 70 years of age and older. Conclusions: Reasons for the underutilization of breast cancer screening among women with long-term disabilities remain elusive. Future studies need to examine additional factors in order to improve screening use, especially among women with long-term disabilities who are 50–69 years of age, for whom screening has been shown to be beneficial in terms of reduced risk of mortality from breast cancer. 相似文献
8.
Breast cancer in African Americans in the US is more aggressive and has a worse outcome than breast cancer in Caucasians. Although the incidence of breast cancer among US whites is higher than among blacks, the mortality rates for blacks are much higher. Breast cancer in blacks is also associated with a more advanced stage at presentation and pathologically aggressive tumors commonly exhibiting estrogen receptor negativity, higher S-phase fractions, and higher numbers of involved lymph nodes. This paper reviews some of the genetic factors that have been shown to be associated with a difference in breast cancer outcome between African Americans and Caucasians in the US such as the BRCA1 and BRCA2 genes, p53 mutations, UGT1A1 gene polymorphisms, and HER-2/neu gene amplifications/overexpression. 相似文献
9.
Prognostic models that predict the clinical course of a breast cancer patient are important in oncology. We propose an approach to constructing such models based on fractional polynomials in which useful transformations of the continuous factors are determined. The idea may be applied with all types of regression model, including Cox regression, the method of choice for survival-time data. We analyse a prospective study of node-positive breast cancer. Seven standard prognostic factors--age, menopausal status, tumour size, tumour grade, number of positive lymph nodes, progesterone and oestrogen receptor concentrations--were investigated in 686 patients, of whom 299 had an event for recurrence-free survival and 171 died. We determine a final model with transformations of prognostic factors and compare it with the more traditional approaches using categorized variables or assuming a straight line relationship. We conclude that analysis using fractional polynomials can extract important prognostic information which the traditional approaches may miss. 相似文献
10.
BACKGROUND: Few population-based studies have reported jointly analyses of relative survival according to the following prognostic factors: tumour-node-metastasis (TNM) stage, age, number of examined and positive nodes, hormonal status, histological Scarff, Bloom and Richardson (SBR) grade, tumour extension, hormone receptor status and tumour multifocal status. PATIENTS AND METHODS: Data on female invasive breast cancer were provided by the Cote d'Or breast cancer registry. The Kaplan-Meier method and log-rank test were used to estimate and compare the survival probability at 1, 5, 10 and 15 years. The effect of prognostic factors on survival was assessed with crude and relative multivariate survival analyses. RESULTS: Crude survival seemed to be worse in patients aged >60 years compared with those aged 45-60 (P > 0.0001), whereas relative survival did not differ. TNM stage, histological SBR grade, progesterone receptor status, tumour multifocal status, locoregional extension and the period of diagnosis were independent prognostic factors of crude and relative survival. CONCLUSION: Breast cancer is influenced by many factors. Despite the absence of any association between the number of examined nodes and overall survival in this study, the number of nodes removed, in conjunction with other prognostic factors, may be useful in selecting node-negative patients for systemic therapy. 相似文献
12.
Data from a multiethnic sample of women participating in the American Cancer Society 1987 Texas Breast Screening Project was used to compare attitudes and behaviors related to breast cancer screening for whites, blacks, and Hispanics. In general, similar patterns of association were observed across racial/ethnic groups between a number of demographic and risk factors and prior mammography and recent clinical breast examination (CBE), although the magnitude of the associations varied somewhat across groups. Reasons for not having had prior mammography also were similar across groups, with lack of physician referral and cost cited as the two most important reasons. However, Hispanics were less likely than blacks or whites to report prior breast cancer screening, including mammography, CBE, and breast self-examination (BSE). This study demonstrated that women of different racial/ethnic backgrounds can be successfully recruited to participate in a patient-initiated, community-based program. However, this programmatic approach requires augmentation with other intervention strategies designed to reach low-income women because women with more years of education and higher family income were overrepresented in all three groups. 相似文献
13.
BACKGROUND: Although overall survival for invasive breast carcinoma remains high, black women experience poorer survival than whites. Less is known about the survival of Hispanics and Asians, who may share clinical and socioeconomic risk factors similar to blacks. To better understand racial/ethnic survival patterns, we investigated the effect of socioeconomic status (SES) and disease stage on racial/ethnic differences in breast carcinoma survival in a large population-based cohort. METHODS: Using data from the Surveillance, Epidemiology, and End Results program (SEER), we identified 10,414 white, 940 black, 1100 Hispanic, and 1180 Asian females diagnosed with breast carcinoma in the Greater San Francisco Bay Area between 1988 and 1992. We used the Kaplan-Meier method to generate survival rates and Cox proportional hazards regression to estimate the risk of death by race/ethnicity, after adjustment for clinical, demographic, and census-derived SES variables. RESULTS: The 10-year unadjusted survival rates were 81% for whites, 69% for blacks, 75% for Hispanics, and 79% for Asians. Adjusting for stage decreased the relative risk of mortality for blacks from 1.81 to 1.29; the stage-adjusted relative risk for Hispanics (1.11) and Asians (1.02) did not differ significantly from whites. Additional adjustment for age, tumor characteristics, and treatment factors did little to alter the relative risk in blacks; adding blue-collar status to the model further decreased the relative risks for blacks to 1.22. Residing in a blue-collar neighborhood was independently associated with a 1.16 increase in risk of death. CONCLUSIONS: After adjustment for multiple factors, blacks continue to have slight but significantly poorer survival after breast carcinoma compared with whites, whereas the survival of Hispanics and Asians did not differ from whites. 相似文献
14.
PurposeRacial/ethnic disparities in breast cancer outcomes may be related to quality of care and reflected in emergency department (ED) visits following primary treatment. We examined racial/ethnic variation in ED visits following breast cancer surgery. MethodsUsing linked data from the California Cancer Registry and California Office of Statewide Health Planning and Development, we identified 151,229 women diagnosed with stage 0-III breast cancer between 2005 and 2013 who received surgical treatment. Differences in odds of having at least one breast cancer-related ED visit within 90 days post-surgery were estimated with logistic regression controlling for clinical and sociodemographic variables. Secondary analyses examined health care-related moderators of disparities. ResultsHispanics and non-Hispanic (NH) Blacks had an increased likelihood of having an ED visit within 90 days of surgery compared to NH Whites [OR?=?1.11 (1.04–1.18), p?=?0.0016; OR?=?1.38 (1.27–1.50), p?<?0.0001, respectively]; the likelihood was reduced in Asian/Pacific Islanders [aOR?=?0.77 (0.71–0.84), p?<?0.0001]. Medicaid and Medicare (vs. commercial insurance) increased the likelihood of ED visit for NH Whites, and to a lesser degree for Hispanics and NH Blacks (p?<?0.0001 for interaction). Receipt of surgery at an NCI-designated Comprehensive Cancer Center or at a for-profit (vs. non-profit) hospital was associated with reduced likelihood of ED visits for all groups. ConclusionRacial/ethnic disparities in ED visits following breast cancer surgery persist after controlling for clinical and sociodemographic variables. Improving quality of care following breast cancer surgery could improve outcomes for all groups. 相似文献
15.
Introduction We examined race/ethnic differences in treatment-related job loss and the financial impact of treatment-related job loss,
in a population-based sample of women diagnosed with breast cancer. 相似文献
16.
BACKGROUND: The rapid increase in the incidence of ductal carcinoma in situ (DCIS) of the breast in the U.S. has been associated with the widespread adoption of screening mammography. Little is known regarding the incidence and treatment of DCIS in women of racial/ethnic groups other than white and black. The current investigation examined recent trends and racial/ethnic differences in the incidence and treatment of DCIS in California. METHODS: All cases of DCIS diagnosed in women age > or = 40 years in California between 1988-1999 were included. Age-adjusted incidence rates for white, black, Hispanic, and Asian-Pacific Islander women were calculated using the 2000 U.S. female population as the standard. The estimated annual percent change (EAPC) in the rates was calculated using least squares regression. RESULTS: The average annual age-adjusted incidence of DCIS (1988-1999) was 45.3 per 100,000 in white women, 35.0 in black women, 30.9 in Asian-Pacific Islander women, and 21.8 in Hispanic women. Although a steady increase in the incidence of DCIS was noted in all racial/ethnic groups over the study period, Asian-Pacific Islander women were found to have experienced the steepest increase (EAPC = 9.1%), particularly in the age group 50-64 years (EAPC = 12.0%). The DCIS incidence was reported to increase with age in white, black, and Hispanic women, but remained fairly constant after the age of 50 years in Asian-Pacific Islanders. The proportion of women with DCIS treated with mastectomy decreased from 53% in 1988 to 32% in 1999. Younger women and Asian-Pacific Islander women reportedly were more likely to undergo mastectomy. CONCLUSIONS: Considerable differences by race/ethnicity and age were observed in DCIS incidence and the change in the incidence in California between 1988 and 1999. Further information is needed to determine whether these differences are because of differential utilization of screening mammography or biologic characteristics of DCIS lesions. 相似文献
17.
Background: Breast cancer is one of the most common malignancies in women. Genome-wide association studies have identified FGFR2 as a breast cancer susceptibility gene. Common variation in other fibroblast growth factor (FGF) receptors might also modify risk. We tested this hypothesis by studying genotyped single-nucleotide polymorphisms (SNPs) and imputed SNPs in FGFR1, FGFR3, FGFR4 and FGFRL1 in the Breast Cancer Association Consortium. Methods: Data were combined from 49 studies, including 53 835 cases and 50 156 controls, of which 89 050 (46 450 cases and 42 600 controls) were of European ancestry, 12 893 (6269 cases and 6624 controls) of Asian and 2048 (1116 cases and 932 controls) of African ancestry. Associations with risk of breast cancer, overall and by disease sub-type, were assessed using unconditional logistic regression. Results: Little evidence of association with breast cancer risk was observed for SNPs in the FGF receptor genes. The strongest evidence in European women was for rs743682 in FGFR3; the estimated per-allele odds ratio was 1.05 (95% confidence interval=1.02–1.09, P=0.0020), which is substantially lower than that observed for SNPs in FGFR2.Conclusion: Our results suggest that common variants in the other FGF receptors are not associated with risk of breast cancer to the degree observed for FGFR2. 相似文献
19.
Summary Objective. To examine age-specific rates of breast cancer incidence among racial and ethnic groups in the United States. Methods. Subjects were 363,801 women diagnosed with invasive breast cancer diagnosed during 1994–1998 and reported in the North American Association of Central Cancer Registries (NAACCR) data set. Variables analyzed included race, ethnicity, 5-year age group (from 10 years through 85+ years), and stage at time of diagnosis (localized, regional, distant). Incidence rates per 100,000 women were calculated for each 5-year age group and stratified by stage. Rate ratios and 95% confidence intervals were calculated by comparing each racial group with whites and Hispanics with non-Hispanics. Results. Black women experience significantly higher breast cancer incidence up to the age of 40 years and significantly lower incidence after age 50 compared with white women of the same ages. This is called the ‘crossover’ effect. This shifting burden of higher incidence occurs at ages 35–39 for localized stage and at ages 55–59 for regional stage. For distant stage, black women of all ages experience higher incidence compared with white women. Similar crossover effects do not exist for American Indian (AI) or Asian/Pacific Islander (API) women compared with white women. Both AI and API women have significantly lower incidence of breast cancer compared with white women, and Hispanic women have significantly lower incidence compared with non-Hispanic women. Conclusions. This study highlights racial and ethnic differences in breast cancer incidence rates among US women. The crossover effect between black and white women, particularly the lower incidence of localized stage disease diagnosed in older black women, is a significant phenomenon that may be associated with screening practices, and has implications for public health planning and cancer control initiatives to reduce racial/ethnic disparities. 相似文献
20.
Background Colorectal cancer, if detected early, has greater than 90% 5-year survival. However, survival has been shown to vary across
racial/ethnic groups in the United States, despite the availability of early detection methods. 相似文献
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