Reason for late-stage breast cancer: absence of screening or detection, or breakdown in follow-up?

Knowledge, attitude, and practice of breast self-examination is associated with general self-care and cultural factors: a study from Tamil Nadu, India

AIM

Breast cancer is the most prevalent type of cancer among women. One form of care related to early detection of breast cancer is breast self-examination (BSE). However, evidence on knowledge, attitude, and practice (KAP) of BSE and its determining factors are minuscule in an Indian context. Therefore, the present study primarily examined the prevalence of KAP of BSE. Further, its association with general self-care and cultural factors was determined.

METHODS

This cross-sectional study obtained data from 412 women (Mn age = 26.63) from two rural localities of Vellore district, Tamil Nadu, India. Self-reported questionnaires of KAP of BSE, self-care, and cultural factors were applied. Statistical analyses include independent sample t-test and binomial logistic regression.

RESULTS

The majority of the sample had inadequate knowledge (58%), unfavourable attitudes (73.8%), and poor practice (89.6%) of BSE. The general self-care among the sample was moderate. Self-care was found to be a significant predictor of knowledge (b = 0.07, p < .05) and attitude (b = 0.092, p < .05) toward BSE. Shyness was identified as a negative predictor of KAP. Discouraged breast health discussions predicted inadequate knowledge, and not being educated by family/friends had a negative impact on knowledge and practice. A preference for same-gender physicians led to an unfavourable attitude toward BSE.

CONCLUSION

The observed negative trends in KAP of BSE are concerning. The results imply that girls and women should be educated and encouraged to practice BSE and promote self-care behaviours. At the same time, efforts to reduce cultural barriers may be helpful to promote the KAP of BSE.

Persistence of patient-detected breast cancer over time: 1990-2019

BACKGROUND

The continued presentation of patient-detected breast cancer (BC) and associated characteristics over time is understudied.

METHODS

In a large institutional cohort of first primary stage 0-IV patients with BC in 1990-2019 (n = 15,827), diagnostic method (patient-detected [PtDBC] [n = 5844]; mammography-detected [MamDBC] [nondiagnostic] [n = 9248]; and physician-detected [PhysDBC] [n = 736]) and patient and tumor characteristics including age, race, TNM stage, and hormone-receptor status were reviewed. Pearson χ2 tests for bivariate comparisons and logistic regression for patient detection-associated factors were used.

RESULTS

In a cohort from 1990 to 2019, the proportion aged 50-74 years (55%-63%; p < .001) and non-White race (9%-37%; p < .001) increased over time. Percentage PtDBC decreased over time but case numbers increased (1990-1999: 44% [n = 1399]; 2010-2019: 34% [n = 2349]; p < .001). Excluding stage 0, PtDBC declined from 47% to 41% over time (p < .001). In 2010-2019, 21% of cases were stage 0, 91% of which were mammography detected (n = 1439). Seventy percent of patient-detected cases were stage II-IV (stage II, 44%; stage III, 20%; stage IV, 6%; p < .001). In adjusted logistic regression, the odds of PtDBC decreased over time (2000-2009: odds ratio [OR], .65 [95% CI, .58-.72]; 2010-2019: OR, .54 [95% CI, .49-.60]), with age <40 years OR, 15.81, and Black and non-White other at 50% increased risk.

CONCLUSIONS

The relative proportion of PtDBC decreased to a constant 34%-40% of total cases after 1990-1999. PtDBC case numbers increased in subsequent years (2000-2019), and were consistently higher stage. Interval cancers, mammography-screening uptake, breast health awareness of age groups outside screening guidelines, and underserved socioeconomic groups may be related to the continued significant PtDBC incidence.

PLAIN LANGUAGE SUMMARY

After decades of mammography-screening availability, symptomatic patient-detected breast cancer declined over time from 44% to a persistent rate of 34% in our institutional cohort. The persistence of patient-detected breast cancer over time presents a difficult situation for patients and care givers without clear diagnosis pathways for younger and older women outside recommended screening guidelines, who often present with higher stage and more lethal characteristics. More timely diagnosis and treatment including breast health awareness, prompt presentation of breast problems, outreach to younger age and minority groups, and provision of specialized training and care delivery for symptomatic patient-detected breast cancer are needed.

Risk Stratification Model for Hepatocellular Cancer in Patients With Cirrhosis

BACKGROUND & AIMS

The available risk stratification indices for hepatocellular cancer (HCC) have limited applicability. We developed and externally validated an HCC risk stratification index in U.S. cohorts of patients with cirrhosis.

METHODS

We used data from 2 prospective U.S. cohorts to develop the risk index. Patients with cirrhosis were enrolled from 8 centers and followed until development of HCC, death, or December 31, 2021. We identified an optimal set of predictors with the highest discriminatory ability (C-index) for HCC. The predictors were refit using competing risk regression and its predictive performance was evaluated using the area under the receiver-operating characteristic curve (AUROC). External validation was performed in a cohort of 21,550 patients with cirrhosis seen in the U.S Veterans Affairs system between 2018 and 2019 with follow-up through 2021.

RESULTS

We developed the model in 2431 patients (mean age 60 years, 31% women, 24% cured hepatitis C, 16% alcoholic liver disease, and 29% nonalcoholic fatty liver disease). The selected model had a C-index of 0.77 (95% confidence interval [CI], 0.73-0.81), and the predictors were age, sex, smoking, alcohol use, body mass index, etiology, α-fetoprotein, albumin, alanine aminotransferase, and platelet levels. The AUROCs were 0.75 (95% CI, 0.65-0.85) at 1 year and 0.77 (95% CI, 0.71-0.83) at 2 years, and the model was well calibrated. In the external validation cohort, the AUROC at 2 years was 0.70 with excellent calibration.

CONCLUSION

The risk index, including objective and routinely available risk factors, can differentiate patients with cirrhosis who will develop HCC and help guide discussions regarding HCC surveillance and prevention. Future studies are needed for additional external validation and refinement of risk stratification.

Disparities Contributing to Late-Stage Diagnosis of Lung, Colorectal, Breast, and Cervical Cancers: Rural and Urban Poverty in Florida

Despite advances in cancer screening, late-stage cancer diagnosis is still a major cause of morbidity and mortality in the United States. In this study, we aim to understand demographic and geographic factors associated with receiving a late-stage diagnosis (LSD) of lung, colorectal, breast, or cervical cancer. (1) Methods: We analyzed data of patients with a cancer diagnosis between 2016 and 2020 from the Florida Cancer Data System (FCDS), a statewide population-based registry. To investigate correlates of LSD, we estimated multi-variable logistic regression models for each cancer while controlling for age, sex, race, insurance, and census tract rurality and poverty. (2) Results: Patients from high-poverty rural areas had higher odds for LSD of lung (OR = 1.23, 95% CI (1.10, 1.37)) and breast cancer (OR = 1.31, 95% CI (1.17,1.47)) than patients from low-poverty urban areas. Patients in high-poverty urban areas saw higher odds of LSD for lung (OR = 1.05 95% CI (1.00, 1.09)), breast (OR = 1.10, 95% CI (1.06, 1.14)), and cervical cancer (OR = 1.19, 95% CI (1.03, 1.37)). (3) Conclusions: Financial barriers contributing to decreased access to care likely drive LSD for cancer in rural and urban communities of Florida.

A Randomized Controlled Trial to Increase Cancer Screening and Reduce Depression Among Low-Income Women

Low-income women of color receive fewer cancer screenings and have higher rates of depression, which can interfere with cancer screening participation. This study assessed the comparative effectiveness of two interventions for improving colorectal, breast, and cervical cancer screening participation and reducing depression among underserved women in Bronx, NY, with depression. This comparative effectiveness randomized controlled trial (RCT) with assessments at study entry, 6, and 12 months utilized an intent-to-treat statistical approach. Eligible women were aged 50 to 64, screened positive for depression, and were overdue for ≥ 1 cancer screening (colorectal, breast, and/or cervical). Participants were randomized to a collaborative depression care plus cancer screening intervention (CCI + PCM) or cancer screening intervention alone (PCM). Interventions were telephone-based, available in English or Spanish, delivered over 12 months, and facilitated by a skilled care manager. Cancer screening data were extracted from electronic health records. Depression was measured with a validated self-report instrument (PHQ-9). Seven hundred fifty seven women consented and were randomized (CCI + PCM, n = 378; PCM, n = 379). Analyses revealed statistically significant increases in up-to-date status for all three cancer screenings; depression improved in both intervention groups. There were no statistically significant differences between the interventions in improving cancer screening rates or reducing depression. CCI and PCM both improved breast, cervical, and colorectal cancer screening and depression in clinical settings in underserved communities; however, neither intervention showed an advantage in outcomes. Decisions about which approach to implement may depend on the nature of the practice and alignment of the interventions with other ongoing priorities and resources.

Amorphophalli Rhizoma inhibits breast cancer growth, proliferation, migration, and invasion via the PI3K/AKT pathway

ETHNOPHARMACOLOGICAL RELEVANCE

Amorphophalli Rhizoma (APR) is widely used as an adjuvant treatment for advanced and metastatic triple-negative breast cancer (TNBC), but its effects, potential active ingredients, and mechanism of action on estrogen receptor-positive (ER+) and human epidermal growth factor receptor-positive (HER2+) breast cancer cells were not reported.

AIM OF THE STUDY

The present study investigated the effects and mechanism of APR on ER+ and HER2+ breast cancer cells.

MATERIALS AND METHODS

Rotary evaporation was used to prepare different extracts of APR. Cell activity was assessed using the cell counting kit-8 (CCK-8) method. Wound healing assays were used to assess cell migration, and a cell invasion assay was performed using a Transwell chamber with Matrigel matrix. A xenograft model was used to analyze the inhibitory effects of APR on tumor growth. Bioinformatics analyses were used to explore the potential mechanism of APR in breast cancer. RT-qPCR and Western blotting were performed to reveal the molecular mechanism.

RESULTS

The ethyl acetate extract of APR showed the strongest tumor inhibitory effect on ER+ and HER2+ breast cancer cells compared to petroleum ether or N-butanol extracts. APR inhibited ER+ and HER2+ breast cancer cell growth, proliferation, migration, and invasion via the phosphatidylinositol-3 kinase (PI3K)/AKT pathway.

CONCLUSIONS

APR had a significant inhibitory effect on ER+ and HER2+ breast cancer cells via the PI3K/AKT signaling pathway. Therefore, APR may be useful for preventing ER+ and HER2+ breast tumor growth, proliferation, migration, and invasion.

Unemployment and cancer screening: Baseline estimates to inform health care delivery in the context of COVID-19 economic distress

Background

During the coronavirus disease 2019 pandemic, US unemployment rates rose to historic highs, and they remain nearly double those of prepandemic levels. Employers are the most common source of health insurance among nonelderly adults. Thus, job loss may lead to a loss of health insurance and reduce access to cancer screening. This study examined associations between unemployment, health insurance, and cancer screening to inform the pandemic's potential impacts on early cancer detection.

Methods

Up‐to‐date and past‐year breast, cervical, colorectal, and prostate cancer screening prevalences were computed for nonelderly respondents (aged <65 years) with 2000‐2018 National Health Interview Survey data. Multivariable logistic regression models with marginal probabilities were used to estimate unemployed‐versus‐employed unadjusted and adjusted prevalence ratios.

Results

Unemployed adults (2000‐2018) were 4 times more likely to lack insurance than employed adults (41.4% vs 10.0%; P < .001). Unemployed adults had a significantly lower up‐to‐date prevalence of screening for cervical cancer (78.5% vs 86.2%; P < .001), breast cancer (67.8% vs 77.5%; P < .001), colorectal cancer (41.9 vs 48.5%; P < .001), and prostate cancer (25.4% vs 36.4%; P < .001). These differences were eliminated after accounting for health insurance coverage.

Conclusions

Unemployment was adversely associated with up‐to‐date cancer screening, and this was fully explained by a lack of health insurance. Ensuring the continuation of health insurance coverage after job loss may mitigate the pandemic's economic distress and future economic downturns' impact on cancer screening.

Unemployment is adversely associated with up‐to‐date cancer screening, and this is fully explained by a lack of health insurance.

Barriers and Facilitators of Breast Cancer Screening amongst Culturally and Linguistically Diverse Women in South Western Sydney: A Qualitative Explorative Study

Breast cancer is the most common cause of cancer amongst Australian women and the second most common cause of cancer mortality. Despite the proven effectiveness of early intervention, screening rates remain subpar across many regions in New South Wales (NSW). Screening rates are particularly low within the culturally and linguistically diverse (CALD) area of South Western Sydney (SWS). The objective of this study was to qualitatively explore barriers and facilitators to breast screening from the perspectives of CALD women from SWS. CALD women aged ≥40 who resided in SWS were invited to participate in a semi-structured interview to explore barriers and facilitators to breast cancer screening. Interviews were recorded, transcribed verbatim and analysed thematically to identify recurring patterns in the data. Sixteen women from CALD backgrounds participated. Women in this study reported absence of symptoms, fatalistic beliefs and embarrassment during the procedure to be the primary reasons for reluctance to screen. Lack of general practitioner (GP) endorsement, transport issues and pain associated with the procedure were also reported as additional barriers to screening. Common facilitators to screening included encouragement from family and friends, family history of cancer and media adverts. CALD women have distinctive barriers to mammography, which lead to poor breast screening participation rates. Opportunistic health promotion in this area is warranted and may lead to better health outcomes amongst this population.

Receipt of Screening Mammography by Insured Women Diagnosed With Breast Cancer and Impact on Outcomes

BACKGROUND

The purpose of this study was to determine factors associated with receipt of screening mammography by insured women before breast cancer diagnosis, and subsequent outcomes.

PATIENTS AND METHODS

Using claims data from commercial and federal payers linked to a regional SEER registry, we identified women diagnosed with breast cancer from 2007 to 2017 and determined receipt of screening mammography within 1 year before diagnosis. We obtained patient and tumor characteristics from the SEER registry and assigned each woman a socioeconomic deprivation score based on residential address. Multivariable logistic regression models were used to evaluate associations of patient and tumor characteristics with late-stage disease and nonreceipt of mammography. We used multivariable Cox proportional hazards models to identify predictors of subsequent mortality.

RESULTS

Among 7,047 women, 69% (n=4,853) received screening mammography before breast cancer diagnosis. Compared with women who received mammography, those with no mammography had a higher proportion of late-stage disease (34% vs 10%) and higher 5-year mortality (18% vs 6%). In multivariable modeling, late-stage disease was most associated with nonreceipt of mammography (odds ratio [OR], 4.35; 95% CI, 3.80-4.98). The Cox model indicated that nonreceipt of mammography predicted increased risk of mortality (hazard ratio [HR], 2.00; 95% CI, 1.64-2.43), independent of late-stage disease at diagnosis (HR, 5.00; 95% CI, 4.10-6.10), Charlson comorbidity index score ≥1 (HR, 2.75; 95% CI, 2.26-3.34), and negative estrogen receptor/progesterone receptor status (HR, 2.09; 95% CI, 1.67-2.61). Nonreceipt of mammography was associated with younger age (40-49 vs 50-59 years; OR, 1.69; 95% CI, 1.45-1.96) and increased socioeconomic deprivation (OR, 1.05 per decile increase; 95% CI, 1.03-1.07).

CONCLUSIONS

In a cohort of insured women diagnosed with breast cancer, nonreceipt of screening mammography was significantly associated with late-stage disease and mortality, suggesting that interventions to further increase uptake of screening mammography may improve breast cancer outcomes.

The impact of marital status on stage at diagnosis and survival of female patients with breast and gynecologic cancers: A meta-analysis

The aim of this meta-analysis is to evaluate the effect of marital status on the stage at diagnosis and survival of female patients with breast and gynecologic cancers. A systematic literature search was conducted on electronic databases (PubMed, Cochrane and EMBASE) till December 31, 2020. Publications investigating the association of marital status with stage at diagnosis and/or cancer-specific mortality (CSM) and/or overall survival (OS) in female patients with breast or gynecologic cancers were retrieved. After studies were selected according to inclusion criteria, data extraction, quality assessment and data analysis were performed. 55 articles were eligible for inclusion, consisting of 1,195,773 female cancer patients with breast, vulvar, cervical, endometrial and ovarian cancers. Unmarried female cancer patients had higher odds of being diagnosed at later stage [odds ratio (OR) = 1.28, 95% confidence interval (CI): 1.22-1.36)] and worse survival outcomes in CSM [hazard ratio (HR) = 1.22, 95% CI: 1.16-1.28] and OS (HR = 1.20, 95% CI: 1.14-1.25). This estimate did not vary by level of social support, number of adjustment factors, or between America and Europe. Being married is associated with timely diagnosis and favorable prognosis in most women's cancers. Unmarried female cancer patients have a higher risk of late-stage diagnosis and worse survival outcomes than the married. Greater concern shall be demonstrated towards unmarried female cancer patients. Furthermore, the impact of lacking economic and emotional support on survival outcomes in unmarried female cancer patients deserves particular attention.

Delayed or failure to follow-up abnormal breast cancer screening mammograms in primary care: a systematic review

Background

Successful breast cancer screening relies on timely follow-up of abnormal mammograms. Delayed or failure to follow-up abnormal mammograms undermines the potential benefits of screening and is associated with poorer outcomes. However, a comprehensive review of inadequate follow-up of abnormal mammograms in primary care has not previously been reported in the literature. This review could identify modifiable factors that influence follow-up, which if addressed, may lead to improved follow-up and patient outcomes.

Methods

A systematic literature review to determine the extent of inadequate follow-up of abnormal screening mammograms in primary care and identify factors impacting on follow-up was conducted. Relevant studies published between 1 January, 1990 and 29 October, 2020 were identified by searching MEDLINE®, Embase, CINAHL® and Cochrane Library, including reference and citation checking. Joanna Briggs Institute Critical Appraisal Checklists were used to assess the risk of bias of included studies according to study design.

Results

Eighteen publications reporting on 17 studies met inclusion criteria; 16 quantitative and two qualitative studies. All studies were conducted in the United States, except one study from the Netherlands. Failure to follow-up abnormal screening mammograms within 3 and at 6 months ranged from 7.2–33% and 27.3–71.6%, respectively. Women of ethnic minority and lower education attainment were more likely to have inadequate follow-up. Factors influencing follow-up included physician-patient miscommunication, information overload created by automated alerts, the absence of adequate retrieval systems to access patient’s results and a lack of coordination of patient records. Logistical barriers to follow-up included inconvenient clinic hours and inconsistent primary care providers. Patient navigation and case management with increased patient education and counselling by physicians was demonstrated to improve follow-up.

Conclusions

Follow-up of abnormal mammograms in primary care is suboptimal. However, interventions addressing amendable factors that negatively impact on follow-up have the potential to improve follow-up, especially for populations of women at risk of inadequate follow-up.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12885-021-08100-3.

Advanced Breast Cancer at Diagnosis: Over One Third Adherent to Screening Recommendations

Background: Advanced breast cancer (ABC) at diagnosis carries a worse prognosis, and can be attributed to delay in diagnosis, failure of screening tests, or aggressive biology. Better understanding of factors related with ABC at diagnosis could help decrease the proportion of such cases.

Patients and Methods: This is a retrospective study of all patients diagnosed and treated for breast cancer (BC) at a single institution between 2012 and 2015. Data were collected from medical records and phone interviews, and included demographic, clinical, and tumor-related data, and adherence to screening recommendations.

Results: Of 555 newly diagnosed BC patients, 390 (70.3%) were diagnosed early (stage 0–IIa), and 165 (29.7%) were diagnosed with ABC (stage IIb–IV). Of the165 patients diagnosed with ABC, 57 (34.5%) underwent screening mammography as recommended. More patients with ABC were <50 years (29.1% vs. 19%, p = 0.006). ABC was associated with higher grade, higher proliferation rate, Her2/neu overexpression, luminal B-like, and triple negative phenotypes. Mammography within 30 months of diagnosis was more prevalent among those diagnosed early (64.6% vs. 34.5%, p = 0.003). Only 31 (18.8%) of the screening eligible patients who were diagnosed at advanced stage did not adhere to screening recommendations.

Conclusions: ABC at diagnosis is related to aggressive tumor biology and age <50 years. It is also associated with lower adherence to screening mammography; however, more than one third of patients diagnosed with ABC who were eligible for screening underwent screening mammography as recommended. Further research is needed to elucidate factors related with ABC at diagnosis, review screening guidelines, and develop more effective screening modalities.

Screening for occult cancer: where are we in 2020?

The relationship between venous thromboembolism (VTE) and cancer has become an area of intense debate due to the importance and the potential benefits of the identification of occult cancer following the diagnosis of unprovoked VTE. At present, extended screening is not recommended in patients with unprovoked VTE. However, if we were able to identify a group at greater risk of presenting cancer during follow-up, these patients would benefit from extended screening. The creation of a trans-organ screening model enables the unification of metrics of quality in the screening of cancer in different localizations. Likewise, it can incorporate cancer screening for other localizations or other specific situations of risk such as unprovoked VTE. This study summarizes the contribution of the Population-based Research Optimizing Screening through Personalized Regimens (PROSPR) initiative aimed at improving the cancer screening process. Likewise, we have carried out an updated review of unprovoked VTE and occult cancer. Finally, we discuss the studies currently ongoing aimed at identifying the population at greatest risk of presenting cancer during follow-up. The identification of this population at high risk could help to determine the following steps to undertake in order to implement screening in this population.

Racial/Ethnic Disparities in Lost Earnings From Cancer Deaths in the United States

Background

Little is known about disparities in economic burden due to premature cancer deaths by race or ethnicity in the United States. This study aimed to compare person-years of life lost (PYLLs) and lost earnings due to premature cancer deaths by race/ethnicity.

Methods

PYLLs were calculated using recent national cancer death and life expectancy data. PYLLs were combined with annual median earnings to generate lost earnings. We compared PYLLs and lost earnings among individuals who died at age 16-84 years due to cancer by racial/ethnic groups (non-Hispanic [NH] White, NH Black, NH Asian or Pacific Islander, and Hispanic).

Results

In 2015, PYLLs due to all premature cancer deaths were 6 512 810 for NH Whites, 1 196 709 for NH Blacks, 279 721 for NH Asian or Pacific Islanders, and 665 968 for Hispanics, translating to age-standardized lost earning rates (per 100 000 person-years) of $34.9 million, $43.5 million, $22.2 million, and $24.5 million, respectively. NH Blacks had higher age-standardized PYLL and lost earning rates than NH Whites for 13 of 19 selected cancer sites. If age-specific PYLL and lost earning rates for NH Blacks were the same as those of NH Whites, 241 334 PYLLs and $3.2 billion lost earnings (22.6% of the total lost earnings among NH Blacks) would have been avoided. Disparities were also observed for average PYLLs and lost earnings per cancer death for all cancers combined and 18 of 19 cancer sites.

Conclusions

Improving equal access to effective cancer prevention, screening, and treatment will be important in reducing the disproportional economic burden associated with racial/ethnic disparities.

Access of patients with breast and lung cancer to chemotherapy treatment in public and private hospitals in the city of Buenos Aires

OBJECTIVES

Describe the time elapsed from the diagnosis to treatment with chemotherapy for patients with breast and lung cancer at public and private hospitals in Buenos Aires.

DESIGN

Retrospective cohort study.

SETTING

Three public and three private academic hospitals in Buenos Aires.

PARTICIPANTS

Patients with breast (n = 168) or lung cancer (n = 100) diagnosis treated with chemotherapy.

MAIN OUTCOMES MEASURES

Clinical and sociodemographic data were collected in a stratified sample. We used the Kaplan-Meier estimator to analyse the time elapsed and the log rank test to compare both groups.

RESULTS

For breast cancer patients, median time elapsed between diagnosis and treatment with chemotherapy was 76 days (95% CI: 64-86) in public and 60 days (95% CI: 52-65) in private hospitals (P = 0.0001). For adjuvant and neoadjuvant treatments, median time was 130 (95% CI: 109-159) versus 64 (95% CI: 56-73) days (P < 0.0001) and 57 days (95% CI: 49-75) versus 26 (95% CI: 16-41) days, respectively (P = 0.0002). There were no significant differences in the time from first consultation to diagnosis. In patients with lung cancer, median time from diagnosis to treatment was 71 days (95% CI: 60-83) in public hospitals and 31 days (95% CI: 24-39) in private hospitals (P = 0.0002). In the metastatic setting, median time to treatment was 63 days (95% CI: 45-83) in public and 33 (95% CI: 26-44) days in private hospitals (P = 0.005).

CONCLUSIONS

There are significant disparity in the access to treatment with chemotherapy for patients in Buenos Aires, Argentina.

Predictors of never having a mammogram among Chinese, Vietnamese, and Korean immigrant women in the U.S

BACKGROUND

Breast cancer is the most common cancer among Asian women in the U.S. The first objective was to investigate predictors (including ethnicity) of never having a mammogram in middle-aged and older Chinese, Vietnamese, and Korean immigrant women (main effects). The second objective was to explore whether relationships between predictors and never having a mammogram varied across the three groups (moderation effects of ethnicity).

METHODS

Merged (2005-2007-2009-2011) California Health Interview Survey data were utilized. Unweighted sample was 3,710 Asian women ages 40 years and older (Chinese = 1,389; Vietnamese = 1,094; Korean = 1,227). Replicate weighted total sample size was 1,710,233 (Chinese = 940,000; Vietnamese = 410,000; Korean = 360,000). Replicate-weighted multivariate logistic regression was applied. Interaction effects (moderator role of ethnicity) were also examined, using multivariate logistic regression, for the second objective.

RESULTS

For the first objective, odds of never having a mammogram were higher for women who were Korean (Ref = Vietnamese), unmarried, or a non-U.S. citizen. Odds were lower in women ages 50-59 or 60-69 (Ref = 70-85). Regarding the second objective, only for Chinese women, odds of never having a mammogram were lower as the number of physician visits got higher.

CONCLUSION

Culturally-sensitive outreach and services should be developed to target higher-risk groups. Patient-centered healthcare strategies tailored for the three groups could be effective. For Chinese women, in particular, regular information sessions or education programs could be provided for enhancing their physician visits.

Definition and Coordination of Roles and Responsibilities Among Cancer Center Clinic and Research Personnel

PURPOSE

Effective enrollment and treatment of patients in cancer clinical trials require definition and coordination of roles and responsibilities among clinic and research personnel.

MATERIALS AND METHODS

We developed a survey that incorporated modified components of the Survey of Physician Attitudes Regarding the Care of Cancer Survivors. Surveys were administered to clinic nursing staff and research personnel at a National Cancer Institute-designated comprehensive cancer center. Results were analyzed using χ²-tests, t tests, and analyses of variance.

RESULTS

Surveys were completed by 105 staff members (n = 50 research staff, n = 55 clinic staff; 61% response rate). Research staff were more likely to feel that they had the skills to answer questions, convey information, and provide education for patients on trials (all P < .05). Both clinic and research staff reported receipt of communication about responsibilities in fewer than 30% of cases, although research staff reported provision of such information in more than 60% of cases. Among 20 tasks related to care of patients in trials, no single preferred model of responsibility assignment was selected by the majority of clinic staff for nine tasks (45%) or by research staff for three tasks (15%). Uncertainty about which team coordinates care was reported by three times as many clinic staff as research staff (P = .01). There was also substantial variation in the preferred model for delivery of care to patients in trials (P < .05).

CONCLUSION

Knowledge, attitudes, and perception of care and responsibilities for patients on clinical trials differ between and among clinic and research personnel. Additional research about how these findings affect efficiency and quality of care on clinical trials is needed.

Why Has Breast Cancer Screening Failed to Decrease the Incidence of de Novo Stage IV Disease?

Background: Despite screening mammography, the incidence of Stage IV breast cancer (BC) at diagnosis has not decreased over the past four decades. We previously found that many BCs are small due to favorable biology rather than early detection. This study compared the biology of Stage IV cancers with that of small cancers typically found by screening. Methods: Trends in the incidence of localized, regional, and distant female BC were compared using SEER*Stat. The National Cancer Database (NCDB) was then queried for invasive cancers from 2010 to 2015, and patient/disease variables were compared across stages. Biological variables including estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (Her2), grade, and lymphovascular invasion were sorted into 48 combinations, from which three biological subtypes emerged: indolent, intermediate, and aggressive. The distributions of the subtypes were compared across disease stages. Multivariable regression assessed the association between Stage IV disease and biology. Results: SEER*Stat confirmed that the incidence of distant BC increased between 1973 and 2015 (annual percent change [APC] = 0.46). NCDB data on roughly 993,000 individuals showed that Stage IV disease at presentation is more common in young, black, uninsured women with low income/education and large, biologically aggressive tumors. The distribution of tumor biology varied by stage, with Stage IV disease including 37.6% aggressive and 6.0% indolent tumors, versus sub-centimeter Stage I disease that included 5.1% aggressive and 40.6% indolent tumors (p < 0.001). The odds of Stage IV disease presentation more than tripled for patients with aggressive tumors (OR3.2, 95% CI 3.0–3.5). Conclusions: Stage I and Stage IV breast cancers represent very different populations of biologic tumor types. This may explain why the incidence of Stage IV cancer has not decreased with screening.

Collaborating on Data, Science, and Infrastructure: The 20-Year Journey of the Cancer Research Network

The Cancer Research Network (CRN) is a consortium of 12 research groups, each affiliated with a nonprofit integrated health care delivery system, that was first funded in 1998. The overall goal of the CRN is to support and facilitate collaborative cancer research within its component delivery systems. This paper describes the CRN's 20-year experience and evolution. The network combined its members' scientific capabilities and data resources to create an infrastructure that has ultimately supported over 275 projects. Insights about the strengths and limitations of electronic health data for research, approaches to optimizing multidisciplinary collaboration, and the role of a health services research infrastructure to complement traditional clinical trials and large observational datasets are described, along with recommendations for other research consortia.

County of Residence and Screening Practices among Latinas and Non-Latina Whites in Two Rural Communities

Objectives

Latinas are less likely than non-Latina Whites (NLW) to utilize mammographic screening and are more likely to be diagnosed with late-stage breast cancer. Here, we examine the effects of county-level factors on guideline-concordant breast-cancer screening behaviors in Latinas and NLWs.

Design

Latinas (N=108) and NLW women (N=132) aged >40 years, residing in two adjacent rural, medically underserved counties in eastern Washington State, completed a baseline questionnaire on mammography utilization and demographics.

Main Outcome Measures

Differences in socioeconomic variables and knowledge of screening practices were examined by ethnicity and county of residence. Predictors of having had a mammogram within the past two years were analyzed using multivariate logistic regression.

Results

Ethnicity was not associated with having a guideline-concordant mammogram; however, age (odds ratio [OR]=1.04, 95%CI:1.01-1.08); having >12 years of education (OR=2.09, 95%CI:1.16-3.79); having a regular clinic for health care (OR=2.22, 95%CI:1.05-4.70); having had a prior clinical breast exam (OR=5.07, 95%CI:1.71-15.02), and county of residence (OR=2.27, 95%CI:1.18-4.37) were all associated with having had a guideline-concordant mammogram.

Conclusions

County of residence and having had a prior CBE were strong predictors of screening utilization. Community-level factors in medically underserved areas may influence screening patterns.

Modifiable Failures in the Colorectal Cancer Screening Process and Their Association With Risk of Death

BACKGROUND & AIMS

Colorectal cancer (CRC) deaths occur when patients do not receive screening or have inadequate follow-up of abnormal results or when the screening test fails. We have few data on the contribution of each to CRC-associated deaths or factors associated with these events.

METHODS

We performed a retrospective cohort study of patients in the Kaiser Permanente Northern and Southern California systems (55-90 years old) who died of CRC from 2006 through 2012 and had ≥5 years of enrollment before diagnosis. We compared data from patients with those from a matched cohort of cancer-free patients in the same system. Receipt, results, indications, and follow-up of CRC tests in the 10-year period before diagnosis were obtained from electronic databases and chart audits.

RESULTS

Of 1750 CRC deaths, 75.9% (n = 1328) occurred in patients who were not up to date in screening and 24.1% (n = 422) occurred in patients who were up to date. Failure to screen was associated with fewer visits to primary care physicians. Of 3486 cancer-free patients, 44.6% were up to date in their screening. Patients who were up to date in their screening had a lower risk of CRC death (odds ratio, 0.38; 95% confidence interval, 0.33-0.44). Failure to screen, or failure to screen at appropriate intervals, occurred in a 67.8% of patients who died of CRC vs 53.2% of cancer-free patients; failure to follow-up on abnormal results occurred in 8.1% of patients who died of CRC vs 2.2% of cancer-free patients. CRC death was associated with higher odds of failure to screen or failure to screen at appropriate intervals (odds ratio, 2.40; 95% confidence interval, 2.07-2.77) and failure to follow-up on abnormal results (odds ratio, 7.26; 95% confidence interval, 5.26-10.03).

CONCLUSIONS

Being up to date on screening substantially decreases the risk of CRC death. In 2 health care systems with high rates of screening, most people who died of CRC had failures in the screening process that could be rectified, such as failure to follow-up on abnormal findings; these significantly increased the risk for CRC death.

[Utilization of Gynaecological Cancer Screening by Women 20 to 35 Years of Age Receiving Unemployment Benefits Under Social Security Code II]

The aim of the study was to analyze associations between utilization of gynaecological cancer screening (GCS) and the number of months during which state unemployment benefits (Social Security Code II) were drawn by women aged 20 to 35 years. The sample included 223 women with complete interview data (participation rate: 69%). The findings show that more women drawing unemployment benefits for a short-term (<12 months) utilized GCS compared to those receiving long-term benefits (>36 months).

Gendered and racialized social expectations, barriers, and delayed breast cancer diagnosis

BACKGROUND

Black women are more likely to be diagnosed at a later stage of breast cancer in part due to barriers to timely screening mammography, resulting in poorer mortality and survival outcomes. Patient navigation that helps to overcome barriers to the early detection of breast cancer is an effective intervention for reducing breast cancer disparity. However, the ability to recognize and seek help to overcome barriers may be affected by gendered and racialized social expectations of women.

METHODS

Data from a randomized controlled trial, the Patient Navigation in Medically Underserved Areas study, were used. The likelihood of obtaining a follow-up screening mammogram was compared between women who identified ≥1 barriers and those who did not.

RESULTS

Of the 3754 women who received the Patient Navigation in Medically Underserved Areas navigation intervention, approximately 14% identified ≥ 1 barriers, which led to additional navigator contacts. Consequently, those women who reported barriers were more likely to obtain a subsequent screening mammogram. Black women, women living in poverty, and women with a higher level of distrust were less likely to report barriers.

CONCLUSIONS

Minority women living in poverty have always been the source of social support for others. However, gendered and racialized social expectations may affect the ways in which women seek help for their own health needs. A way to improve the effectiveness of navigation would be to recognize how minority women's gender images and expectations could shape how they seek help and support. A report of no barriers does not always translate into no problems. Proactive approaches to identify potential barriers may be beneficial.

The "Empowering Latinas to Obtain Breast Cancer Screenings" study: Rationale and design

BACKGROUND

Latinas suffer disproportionately from breast cancer (BC) in part due to lower guideline-concordant screening. Multiple intervention approaches have been developed to promote screening through direct patient education and empowerment approaches (i.e., training community members to share BC information). This study compares the relative effects of these approaches on: 1) women's BC screening; and, 2) women's dissemination of BC information within their social networks.

DESIGN/METHODS

Our quasi-experimental trial is being implemented in community venues in two predominantly Latino neighborhoods in South and West Chicago. Eligible participants: 1) are female; 2) are 52-74 years old; 3) have not obtained a mammogram in the past 2 years; and, 4) have not previously participated in health-related volunteerism. Based on their geographic location, participants are assigned to one of two group-based interventions. Both interventions consist of three two-hour sessions, which includes BC early detection education. The education intervention sessions also covers BC prevention (diet, physical activity), whereas the empowerment intervention covers sharing information with family/friends, and health volunteerism. Navigation is provided for all women who wish to obtain mammograms. Primary outcomes include: 1) receipt of BC screening; and, 2) participants' dissemination of BC information. Secondary outcomes include positive changes in 1) participants' self-reported psychosocial facilitators; and, 2) social network members' BC behaviors.

DISCUSSION

The design of our program allows for a preliminary comparison of the effectiveness of these two approaches. This work will inform larger comparativeness trials and offers a new approach to intervention evaluation via social network analysis.

Reducing Disparities in Cancer Screening and Prevention through Community-Based Participatory Research Partnerships with Local Libraries: A Comprehensive Dynamic Trial

Reduction of cancer-related disparities requires strategies that link medically underserved communities to preventive care. In this community-based participatory research project, a public library system brought together stakeholders to plan and undertake programs to address cancer screening and risk behavior. This study was implemented over 48 months in 20 large urban neighborhoods, selected to reach diverse communities disconnected from care. In each neighborhood, Cancer Action Councils were organized to conduct a comprehensive dynamic trial, an iterative process of program planning, implementation and evaluation. This process was phased into neighborhoods in random, stepped-wedge sequence. Population-level outcomes included self-reported screening adherence and smoking cessation, based on street intercept interviews. Event-history regressions (n = 9374) demonstrated that adherence outcomes were associated with program implementation, as were mediators such as awareness of screening programs and cancer information seeking. Findings varied by ethnicity, and were strongest among respondents born outside the U.S. or least engaged in care. This intervention impacted health behavior in diverse, underserved and vulnerable neighborhoods. It has been sustained as a routine library system program for several years after conclusion of grant support. In sum, participatory research with the public library system offers a flexible, scalable approach to reduce cancer health disparities.

Explaining time elapsed prior to cancer diagnosis: patients' perspectives

Background

Cancer is the leading cause of death in Canada. Early cancer diagnosis could improve patients’ prognosis and quality of life. This study aimed to analyze the factors influencing elapsed time between the first help-seeking trigger and cancer diagnosis with respect to the three most common and deadliest cancer types: lung, breast, and colorectal.

Methods

This paper presents the qualitative component of a larger project based on a sequential explanatory design. Twenty-two patients diagnosed were interviewed, between 2011 to 2013, in oncology clinics of four hospitals in the two most populous regions in Quebec (Canada). Transcripts were analyzed using the Model of Pathways to Treatment.

Results

Pre-diagnosis elapsed time and phases are difficult to appraise precisely and vary according to cancer sites and symptoms specificity. This observation makes the Model of Pathways to Treatment challenging to use to analyze patients’ experiences. Analyses identified factors contributing to elapsed time that are linked to type of cancer, to patients, and to health system organization.

Conclusions

This research allowed us to identify avenues for reducing the intervals between first symptoms and cancer diagnosis. The existence of inequities in access to diagnostic services, even in a universal healthcare system, was highlighted.

Metformin and breast cancer stage at diagnosis: a population-based study

PURPOSE

The objective of the present study was to use a large, population-based cohort to examine the association between metformin and breast cancer stage at diagnosis while accounting for mammography differences.

METHODS

We used data from Ontario administrative health databases to identify women 68 years of age or older with diabetes and invasive breast cancer diagnosed from 1 January 2007 to 31 December 2012. Adjusted logistic regression models were used to compare breast cancer stage at diagnosis (stages i and ii vs. iii and iv) between the women exposed and not exposed to metformin. We also examined the association between metformin use and estrogen receptor status, tumour size, and lymph node status in the subset of women for whom those data were available.

RESULTS

We identified 3125 women with diabetes and breast cancer; 1519 (48.6%) had been exposed to metformin before their cancer diagnosis. Median age at breast cancer diagnosis was 76 years (interquartile range: 72-82 years), and mean duration of diabetes was 8.8 ± 5.9 years. In multivariable analyses, metformin exposure was not associated with an earlier stage of breast cancer (odds ratio: 0.98; 95% confidence interval: 0.81 to 1.19). In secondary analyses, metformin exposure was not associated with estrogen receptor-positive breast cancer, tumours larger than 2 cm, or positive lymph nodes.

CONCLUSIONS

This population-based study did not show an association between metformin use and breast cancer stage or tumour characteristics at diagnosis. Our study considered older women with long-standing diabetes, and therefore further studies in younger patients could be warranted.

Demographic Disparities in Late-Stage Diagnosis of Breast and Colorectal Cancers Across the USA

BACKGROUND

We determined whether there were disparities in the likelihood of being diagnosed at a late stage for breast cancer (BC) or colorectal cancer (CRC) in each of 40 states, using the recently available US Cancer Statistics (USCS) database.

METHODS

We extracted 981,457 BC cases and 558,568 CRC cases diagnosed in 2004-2009. Separate multilevel regressions were run for each state and each cancer type. Models included person and area-level covariates and were identically specified across states. The disparities foci were race or ethnicity (white, African-American, Hispanic, Asian, all other), gender, and age (<40, 40-49, 50-64, 65-74, and 75+). Using whites, males, and the oldest age group as reference groups, we noted the statistically significant disparities coefficients (p value ≤0.05) and translated the findings via a set of maps of states in the USA.

RESULTS

National disparity estimates were not consistent with disparities identified in the states. Some states had estimates consistent with the national average, while others did not. Patterns of disparities across states were different for each covariate and mapped separately.

CONCLUSION

National disparity estimates may mask what is true at the more local, state level because national estimates can confound the effects of race with place. Cancer control efforts are local and require locally relevant information to assess needs. Findings from the period 2004-2009 establish valuable benchmarks against which to assess changes following national health reform implemented in 2010. The USCS database is a valuable new resource that will facilitate future disparities research.

Narrative interventions for health screening behaviours: A systematic review

Health information can be presented in different formats, such as a statistically-based or a story-based (e.g. narrative) format; however, there is no consensus on the ideal way to present screening information. This systematic review summarizes the literature pertaining to narrative interventions' efficacy at changing screening behaviour and its determinants. Five psychology and public health databases were searched; 19 studies, 18 focused on cancer and 1 on sexual health, met eligibility criteria. There is consistent evidence supporting the efficacy of narratives, but mixed evidence supporting an advantage for narratives over statistical interventions for screening behaviour and its determinants. Further investigation is warranted.

Determinants of Awareness and Practice of Breast Self Examination Among Rural Women in Trichy, Tamil Nadu

Introduction:

Breast cancer is the most common cancer among women worldwide, and it can be detected at an early stage through self-examination which increases the chance of survival. This study aimed to assess knowledge and practice of breast self-examination (BSE) among females in a rural area of Trichy district.

Methodology:

This community-based, cross-sectional study was carried out among a total sample of 200 women in rural area of Trichy. The participants were interviewed using a structured interviewer-administered questionnaire to obtain information on their sociodemographic characteristics, awareness on breast cancer, and knowledge, attitude, practice of BSE. Data were entered into MS Excel and analyzed using SPSS version 20.0. Spearman correlation and Chi-square test were used to analyze the association between the variables.

Results:

The mean age of the study group was 36.9 ± 8.8 years. Eighty percent were literates. Most of the women 178 (89%) were aware of breast cancer. Only 26% of the women were aware of BSE. Only 18% of the females had ever checked their breast and 5% practiced it regularly. Awareness of BSE was found to be significantly associated with age and educational attainment.

Conclusion:

The level of knowledge and practice of BSE among females are unacceptably low. Efforts should be made to increase level of knowledge and practice of BSE through health education programs.

Achieving Coordinated Care for Patients With Complex Cases of Cancer: A Multiteam System Approach

Patients with cancer with multiple chronic conditions pose a unique challenge to how primary care and specialty care teams provide well-coordinated, patient-centered care. Effectiveness of these care teams in providing optimal health care depends on the extent to which they coordinate their goals and knowledge as components of a multiteam system (MTS). This article outlines challenges of care coordination in the context of an MTS, illustrated through the care experience of "Mr Fuentes," a patient in the Dallas County integrated safety-net system, Parkland. As a continuing patient with chronic illnesses, the patient being discussed is managed through one of the Parkland community-oriented primary care clinics. However, a cancer diagnosis triggered an additional need for augmented coordination between his different provider teams. Further research and practice should investigate the relationships of MTS coordination for shared care management, transfer to and from specialty care, treatment compliance, barriers to care, and health outcomes of chronic comorbid conditions, as well as cancer control and surveillance.

[Medical history of a breast cancer: about a case!!! How to react]

Locally advanced breast cancer is a rare entity in developed countries while we continue to treat patients with advanced stage tumor in African countries. Our study reports the case of an intellectual patient referring the presence of a right breast nodule found during self-examination treated at the military hospital of Meknes, Morocco; she was examined only six months after discovery, in a historical state of locally advanced breast cancer. Our study aims to detect the contemporary anomalies leading to a delayed diagnosis of the breast cancer and to propose solutions to increase awareness among population.

A Community-Based Partnership to Successfully Implement and Maintain a Breast Health Navigation Program

Breast cancer screening combined with follow-up and treatment reduces breast cancer mortality. However, in the study clinic, only 12 % of eligible women ≥40 years received a mammogram in the previous year. The objective of this project was to implement patient navigation, in our partner health clinic to (1) identify women overdue for a mammogram; and (2) increase mammography utilization in this population over a 2-year period. Women overdue for a mammogram were identified. One patient navigator made navigation attempts over a 2-year period (2009-2011). Navigation included working around systems- and individual-level barriers to receive a mammogram as well as the appropriate follow-up post screening. Women were contacted up to three times to initiate navigation. The proportion of women navigated and who received a mammogram during the study period were compared to women who did not receive a mammogram using Chi square tests for categorical variables and t tests for continuous variables with an α = 0.05. Barriers to previous mammography were also assessed. With 94.8 % of eligible women navigated and 94 % of these women completing mammography, the implementation project reached 89 % of the target population. This project was a successful implementation of an evidence-based patient navigation program that continues to provide significant impact in a high-need area. Cost was the most commonly cite barrier to mammography. Increasing awareness of resources in the community for mammography and follow-up care remains a necessary adjunct to removing structural and financial barriers to accessing preventive services.

Prevalence of major risk factors and use of screening tests for cancer in the United States

Much of the suffering and death from cancer could be prevented by more systematic efforts to reduce tobacco use, improve diet, increase physical activity, reduce obesity, and expand the use of established screening tests. Monitoring the prevalence of cancer risk factors and screening is important to measure progress and strengthen cancer prevention and early detection efforts. In this review article, we provide recent prevalence estimates for several cancer risk factors, including tobacco, obesity, physical activity, nutrition, ultraviolet radiation exposure as well as human papillomavirus and hepatitis B vaccination coverage and cancer screening prevalence in the United States. In 2013, cigarette smoking prevalence was 17.8% among adults nationally, but ranged from 10.3% in Utah to 27.3% in West Virginia. In addition, 15.7% of U.S. high school students were current smokers. In 2011-2012, obesity prevalence was high among both adults (34.9%) and adolescents (20.5%), but has leveled off since 2002. About 20.2% of high school girls were users of indoor tanning devices, compared with 5.3% of boys. In 2013, cancer screening prevalence ranged from 58.6% for colorectal cancer to 80.8% for cervical cancer and remains low among the uninsured, particularly for colorectal cancer screening where only 21.9% of eligible adults received recommended colorectal cancer screening.

Perspectives of Mobile Versus Fixed Mammography in Santa Clara County, California: A Focus Group Study

Objective: Our aim was to examine underserved women’s perceptions on mobile versus fixed mammography in Santa Clara, California through a focus group study.

Background: Research has shown that medically underserved women have higher breast cancer mortality rates correlated with under-screening and a disproportional rate of late-stage diagnosis. The Community Health Partnership in Santa Clara County, California runs the Community Mammography Access Project (CMAP) that targets nearly 20,000 medically underserved women over the age of 40 in the county through the collaborative effort of an existing safety net of healthcare providers. However, little data exists on the advantages or disadvantages of mobile mammography units from the patient perspective. 

Methods: We assessed underserved women’s perspectives on mammography services in Santa Clara County through two focus groups from women screened at mobile or fixed site programs. Patients were recruited from both CMAP clinics and a county hospital, and focus group data were analyzed using content analysis.

Results: We found that women from both the mobile and fixed sites shared similar motivating factors for getting a mammogram. Both groups recognized that screening was uncomfortable but necessary for good health and had positive feedback about their personal physicians. However, mobile participants, in particular, appreciated the atmosphere of mobile screening, reported shorter wait times, and remarked on the good communication from the clinic staff and empathetic treatment they received. However, mobile participants also expressed concern about the quality of films at mobile sites due to delayed initial reading of the films. 

Conclusions: Mobile mammography offers a unique opportunity for women of underserved populations to access high satisfaction screenings, and it encourages a model similar to CMAP in other underserved areas. However, emphasis should be placed on providing a warm and welcoming environment for patients and ensuring the quality of mammography images. 

What Predicts an Advanced-Stage Diagnosis of Breast Cancer? Sorting Out the Influence of Method of Detection, Access to Care, and Biologic Factors

BACKGROUND

Multiple studies have yielded important findings regarding the determinants of an advanced-stage diagnosis of breast cancer. We seek to advance this line of inquiry through a broadened conceptual framework and accompanying statistical modeling strategy that recognize the dual importance of access-to-care and biologic factors on stage.

METHODS

The Centers for Disease Control and Prevention-sponsored Breast and Prostate Cancer Data Quality and Patterns of Care Study yielded a seven-state, cancer registry-derived population-based sample of 9,142 women diagnosed with a first primary in situ or invasive breast cancer in 2004. The likelihood of advanced-stage cancer (American Joint Committee on Cancer IIIB, IIIC, or IV) was investigated through multivariable regression modeling, with base-case analyses using the method of instrumental variables (IV) to detect and correct for possible selection bias. The robustness of base-case findings was examined through extensive sensitivity analyses.

RESULTS

Advanced-stage disease was negatively associated with detection by mammography (P < 0.001) and with age < 50 (P < 0.001), and positively related to black race (P = 0.07), not being privately insured [Medicaid (P = 0.01), Medicare (P = 0.04), uninsured (P = 0.07)], being single (P = 0.06), body mass index > 40 (P = 0.001), a HER2 type tumor (P < 0.001), and tumor grade not well differentiated (P < 0.001). This IV model detected and adjusted for significant selection effects associated with method of detection (P = 0.02). Sensitivity analyses generally supported these base-case results.

CONCLUSIONS

Through our comprehensive modeling strategy and sensitivity analyses, we provide new estimates of the magnitude and robustness of the determinants of advanced-stage breast cancer.

IMPACT

Statistical approaches frequently used to address observational data biases in treatment-outcome studies can be applied similarly in analyses of the determinants of stage at diagnosis. Cancer Epidemiol Biomarkers Prev; 25(4); 613-23. ©2016 AACR.

The Pioneering Role of the Vaccine Safety Datalink Project (VSD) to Advance Collaborative Research and Distributed Data Networks

Introduction:

Large-scale distributed data networks consisting of diverse stakeholders including providers, patients, and payers are changing health research in terms of methods, speed and efficiency. The Vaccine Safety Datalink (VSD) set the stage for expanded involvement of health plans in collaborative research.

Expanding Surveillance Capacity and Progress Toward a Learning Health System:

From an initial collaboration of four integrated health systems with fewer than 10 million covered lives to 16 diverse health plans with nearly 100 million lives now in the FDA Sentinel, the expanded engagement of health plan researchers has been essential to increase the value and impact of these efforts. The collaborative structure of the VSD established a pathway toward research efforts that successfully engage all stakeholders in a cohesive rather than competitive manner. The scientific expertise and methodology developed through the VSD such as rapid cycle analysis (RCA) to conduct near real-time safety surveillance allowed for the development of the expanded surveillance systems that now exist.

Building on Success and Lessons Learned:

These networks have learned from and built on the knowledge base and infrastructure created by the VSD investigators. This shared technical knowledge and experience expedited the development of systems like the FDA’s Mini-Sentinel and the Patient Centered Outcomes Research Institute (PCORI)’s PCORnet

Conclusion:

This narrative reviews the evolution of the VSD, its contribution to other collaborative research networks, longer-term sustainability of this type of distributed research, and how knowledge gained from the earlier efforts can contribute to a continually learning health system.

Hepatocellular Carcinoma From Epidemiology to Prevention: Translating Knowledge into Practice

The epidemiology of hepatocellular carcinoma (HCC) is characterized by dynamic temporal trends, several major established (i.e., HCV, HBV, alcohol) and emerging (i.e., diabetes, obesity, NAFLD) risk factors. Epidemiologic studies and clinical trials have identified additional demographic, clinical, pharmacological, genetic and life style factors that further affect or modify the likelihood of HCC and can be used in clinical practice to identify at-risk patients (i.e., risk stratification or prognostic algorithms) that can be targeted for prevention and early detection programs. These studies have also paved the way toward several well established preventive measures including HBV vaccination, HBV treatment, HCV treatment and HCC surveillance, and potential chemoprevention using statins, metformin or coffee. However, the effectiveness of HCC prevention in clinical practice and at the population level has lagged behind due to patient, provider, system, and societal factors. The Quality in the Continuum of Cancer Care model provides a framework for evaluating the HCC prevention processes, including potential failures that create a gap between efficacy and effectiveness.

Family/friend recommendations and mammography intentions: the roles of perceived mammography norms and support

Identifying factors that increase mammography use among Latinas is an important public health priority. Latinas are more likely to report mammography intentions and use, if a family member or friend recommends that they get a mammogram. Little is known about the mechanisms underlying the relationship between social interactions and mammography intentions. Theory suggests that family/friend recommendations increase perceived mammography norms (others believe a woman should obtain a mammogram) and support (others will help her obtain a mammogram), which in turn increase mammography intentions and use. We tested these hypotheses with data from the ¡Fortaleza Latina! study, a randomized controlled trial including 539 Latinas in Washington State. Women whose family/friend recommended they get a mammogram within the last year were more likely to report mammography intentions, norms and support. Perceived mammography norms mediated the relationship between family/friend recommendations and intentions, Mediated Effect = 0.38, 95%CI [0.20, 0.61], but not support, Mediated Effect = 0.002, 95%CI [-0.07, 0.07]. Our findings suggest perceived mammography norms are a potential mechanism underlying the effect of family/friend recommendations on mammography use among Latinas. Our findings make an important contribution to theory about the associations of social interactions, perceptions and health behaviors.

Unifying screening processes within the PROSPR consortium: a conceptual model for breast, cervical, and colorectal cancer screening

General frameworks of the cancer screening process are available, but none directly compare the process in detail across different organ sites. This limits the ability of medical and public health professionals to develop and evaluate coordinated screening programs that apply resources and population management strategies available for one cancer site to other sites. We present a trans-organ conceptual model that incorporates a single screening episode for breast, cervical, and colorectal cancers into a unified framework based on clinical guidelines and protocols; the model concepts could be expanded to other organ sites. The model covers four types of care in the screening process: risk assessment, detection, diagnosis, and treatment. Interfaces between different provider teams (eg, primary care and specialty care), including communication and transfer of responsibility, may occur when transitioning between types of care. Our model highlights across each organ site similarities and differences in steps, interfaces, and transitions in the screening process and documents the conclusion of a screening episode. This model was developed within the National Cancer Institute-funded consortium Population-based Research Optimizing Screening through Personalized Regimens (PROSPR). PROSPR aims to optimize the screening process for breast, cervical, and colorectal cancer and includes seven research centers and a statistical coordinating center. Given current health care reform initiatives in the United States, this conceptual model can facilitate the development of comprehensive quality metrics for cancer screening and promote trans-organ comparative cancer screening research. PROSPR findings will support the design of interventions that improve screening outcomes across multiple cancer sites.

Teams and teamwork during a cancer diagnosis: interdependency within and between teams

This article discusses the care process among three groups (primary care, radiology, and surgery) aiding a 57-year-old woman during her screening mammography and diagnosis of breast cancer. This is the first in a series of articles exploring principles and topics relevant to teams guiding clinicians involved in cancer care. The challenges demonstrated in this case illustrate how clinicians work within and between groups to deliver this first phase of cancer care. The case helps demonstrate the differences between groups and teams. Focusing on the patient and the overall process of care coordination can help move groups toward becoming teams who deliver better care by identifying and managing goals, roles, and interdependent care tasks. Care providers and researchers can use the case to consider their own work and essential aspects of teamwork needed to improve care, patient outcomes, and the evidence that supports each.

The association between diabetes and breast cancer stage at diagnosis: a population-based study

Women with diabetes have higher breast cancer incidence and mortality. The purpose of this study was to examine the impact of diabetes on stage at breast cancer diagnosis, as a possible reason for their higher mortality. Using population-based health databases from Ontario, Canada, this retrospective cohort study examined stage at diagnosis (II, III, or IV vs I) among women aged 20-105 years who were newly diagnosed with invasive breast cancer between 2007 and 2012. We compared those with diabetes to those without diabetes. Diabetes was defined based on medical records using a validated algorithm. Among 38,407 women with breast cancer, 6115 (15.9 %) women had diabetes. Breast cancer patients with diabetes were significantly more likely to present with advanced-stage breast cancer than those without diabetes. After adjustment for mammograms and other covariates, diabetes was associated with a significantly increased risk of Stage II [adjusted odds ratio (aOR) 1.14, 95 % confidence interval (CI) 1.07, 1.22], Stage III (aOR 1.21, 95 % CI 1.11, 1.33), and Stage IV (aOR 1.16, 95 % CI 1.01, 1.33) versus Stage I breast cancer. Women with diabetes had a higher risk of lymph node metastases (aOR 1.16, 95 % CI 1.06, 1.27) and tumors with size over 2 cm (aOR 1.16, 95 % CI 1.06, 1.28). Diabetes was associated with more advanced-stage breast cancer, even after accounting for differences in screening mammogram use and other factors. Our findings suggest that diabetes may predispose to more aggressive breast cancer, which may be a contributor to their higher cancer mortality.

Public health national approach to reducing breast and cervical cancer disparities

Breast and cervical cancer have had disparate impact on the lives of women. The burden of breast and cervical cancer is more prominent among some racial and ethnic minority women. Providing comprehensive care to all medically underserved women is a critical element in continuing the battle to reduce cancer burden and eliminate disparities. The National Breast and Cervical Cancer Early Detection Program is the only nationally organized cancer screening program for underserved women in the United States. Its public health goal is to ensure access to high-quality screening, follow-up, and treatment services for diverse and vulnerable populations that, in turn, may reduce disparities.

Macro-level factors impacting geographic disparities in cancer screening

OBJECTIVES

Examine how differences in state regulatory environments predict geographic disparities in the utilization of cancer screening.

DATA SOURCES/SETTING

100% Medicare fee-for-service population data from 2001-2005 was developed as multi-year breast (BC) and colorectal cancer (CRC) screening utilization rates in each county in the US.

STUDY DESIGN

A comprehensive set of supply and demand predictors are used in a multilevel model of county-level cancer screening utilization in the context of state regulatory markets. States dictate insurance mandates/regulations and whether alternative providers (nurse practitioners) can provide preventive care services supplied by MDs. Controlling statistically for the supply of both types of providers, we study the joint effects of two private insurance regulations: one mandating that insureds with serious or chronic health conditions may receive continuity of care from their established physician(s) after changing health insurance plans, and another mandating that external grievance review is an option for all health plan coverage/denial decisions. These private insurance plan regulations are expected to affect the degree of beneficial spillovers from managed care practices, which may have increased area-wide cancer screening rates.

PRINCIPAL FINDINGS

The two private insurance regulations under study were significant predictors impacted by local market conditions. Managed care spillovers in local markets were significantly associated with higher BC screening rates, but only in states lacking the two forms of regulation under study. Spillovers were significantly associated with higher CRC cancer screening rates everywhere, but much higher in the unregulated states. Area poverty dampened screening rates, but less so for CRC screening in the states with these regulations.

CONCLUSIONS

Two state insurance regulations that empowered consumers with more autonomy to make informed utilization decisions varied across states, and exhibited significant associations with screening rates, which varied with the degree of managed care penetration or poverty in the state's counties. Beneficial spillover effects from managed care practices and negative influences from area poverty are not uniform across the United States. Both variables had stronger associations with CRC than BC screening utilization, as did state regulatory variables. CRC screening by endoscopy was more subject to market and regulatory factors than BC screening.

The colorectal cancer screening process in community settings: a conceptual model for the population-based research optimizing screening through personalized regimens consortium

Reducing colorectal cancer mortality by promoting screening has been a national goal for two decades. The NCI's Population-Based Research Optimizing Screening through Personalized Regimens (PROSPR) consortium is the first federal initiative to foster coordinated, transdisciplinary research evaluating the entire cancer screening process in community settings. PROSPR is creating a central data repository to facilitate research evaluating the breast, cervical, and colorectal cancer screening process across different patient populations, provider types, and delivery systems. Data are being collected and organized at the multiple levels in which individuals are nested (e.g., healthcare systems, facilities, providers, and patients). Here, we describe a conceptual model of the colorectal cancer screening process guiding data collection and highlight critical research questions that will be addressed through pooled data. We also describe the three research centers focused on colorectal cancer screening with respect to study populations, practice settings, and screening policies. PROSPR comprehensively elucidates the complex screening process through observational study, and has potential to improve care delivery beyond the healthcare systems studied. Findings will inform intervention designs and policies to optimize colorectal cancer screening delivery and advance the Institute of Medicine's goals of effective, efficient, coordinated, timely, and safe health care with respect to evidence-based cancer screening.