Narrowing Racial Gaps in Breast Cancer: Factors Affecting Probability of Adjuvant Radiation Therapy

PURPOSE

Adjuvant radiation therapy has historically been underused by black patients with breast cancer compared with white patients. We prospectively investigated factors, including sociocultural, psychosocial, and health care factors, that may be associated with the use or omission of adjuvant radiation therapy by both racial groups.

METHODS AND MATERIALS

Women with primary invasive, nonmetastatic breast cancer were recruited from hospitals and through community outreach efforts in the Washington, DC, and Detroit, Michigan, areas between July 2006 and April 2011. Data were collected via telephone interviews regarding psychosocial (eg, self-efficacy) and health care factors (eg, communication) at the time they received a diagnosis. Clinical data were extracted from their medical charts after the completion of treatment. We examined the association among multiple demographic, socio-cultural, healthcare process factors and the use of radiotherapy. Logistic multivariable regression models identified associations with radiotherapy receipt.

RESULTS

Among 395 eligible and consenting women, 315 had complete baseline data, and 217 were in the final analytical sample, having met criteria for adjuvant breast or chest wall radiation therapy after breast conservation surgery or mastectomy. Among women eligible for radiation, all were insured, 59% were black, the mean age was 55.4 years, and the majority had stage I or II disease. Overall, approximately 70% percent of women received adjuvant radiation therapy. On multivariable analyses, the likelihood of receiving adjuvant radiation therapy was higher for those who were black with any level of indication for radiation therapy (odds ratio 2.21; P < .01), those for whom comorbidities were present, and those who demonstrated positive sociocultural factors such as self-efficacy and high reported rates of provider communication about radiation therapy (odds ratio 1.20; P < .05). Among women with strong indications for radiation therapy, there was no significant association with race on multivariable analysis.

CONCLUSIONS

Our findings suggest that among women with any indication for radiation therapy, black patients were more likely to receive radiation therapy compared with white patients. Furthermore, data suggest improved provider communication and self-efficacy are important predictors of receipt of radiation therapy. Further studies exploring the effects of provider communication and sociocultural factors to diverse patient populations may be warranted.

Reducing Disparities in Receipt of Genetic Counseling for Underserved Women at Risk of Hereditary Breast and Ovarian Cancer

Purpose: Genetic counseling (GC) provides critical risk prediction information to women at-risk of carrying a genetic alternation; yet racial/ethnic and socioeconomic disparities persist with regard to GC uptake. This study examined patterns of GC uptake after a referral in a racially diverse population. Materials and Methods: In an urban academic medical center, medical records were reviewed between January 2016 and December 2017 for women who were referred to a genetic counselor for hereditary breast and ovarian cancer. Study outcomes were making an appointment (yes/no) and keeping an appointment. We assessed sociodemographic factors and clinical factors. Associations between factors and the outcomes were analyzed using chi square, and logistic regression was used for multivariable analysis. Results: A total of 510 women were referred to GC and most made appointments. More than half were white (55.3%) and employed (53.1%). No significant associations were observed between sociodemographic factors and making an appointment. A total of 425 women made an appointment and 268 kept their appointment. Insurance status (p = 0.003), marital status (p = 0.000), and work status (p = 0.039) were associated with receiving GC. In the logistic model, being married (odds ratio [OR] 2.119 [95% confidence interval, CI 1.341-3.347] p = 0.001) and having insurance (OR 2.203 [95% CI 1.208-4.016] p = 0.021) increased the likelihood of receiving counseling. Conclusions: Racial disparities in GC uptake were not observed in this sample. Unmarried women may need additional support to obtain GC. Financial assistance or other options need to be discussed during navigation as a way to lessen the disparity between women with insurance and those without.

Culturally Targeted Video Improves Psychosocial Outcomes in Latina Women at Risk of Hereditary Breast and Ovarian Cancer

Latina women at risk of hereditary breast and ovarian cancer (HBOC) have lower awareness, knowledge, and use of genetic counseling and testing services (GCT) than non-Latina Whites. Few interventions have been developed to reduce these disparities among at-risk Latinas. This pilot study assessed the impact of a culturally targeted narrative video developed by our team. The study included 40 Latina immigrants living in the United States who were at risk of HBOC, including affected and unaffected women. We assessed pre-post differences in psychosocial outcomes. Participants were 47.35 years old on average (SD = 9.48). Most (70%) were unaffected with cancer, had an annual income of $40,000 or less (65%), an education of High School or less (62.5%), and were uninsured (77.5%). The video significantly enhanced knowledge (p < 0.001), positive attitudes (p < 0.05), anticipatory positive emotions (p < 0.05), and intentions to participate in counseling (p < 0.001). Importantly, the video also significantly reduced negative attitudes (p < 0.05), and attitudinal ambivalence (p < 0.001). The culturally targeted video shows preliminary evidence in improving psychosocial outcomes related to GCT uptake in Latinas at risk for HBOC. This intervention is a promising easily-disseminable strategy to address disparities in GCT utilization.

Providers' Perspectives on Adherence to Hormonal Therapy in Breast Cancer Survivors. Is there a Role for the Digital Health Feedback System?

Objective

Despite the benefits of hormonal therapy (HT) adherence remains suboptimal in ER positive breast cancer patients. Medication adherence is challenging to assess and tends to be overestimated. The Digital Health Feedback System (DHFS) consists of an ingestible sensor attached to a pill that sends intake date and time to a smart phone or computer. Patients can share this information with health care providers and other persons. The DHFS can also send reminders. This mixed methods study examined providers' perceptions of HT medication adherence. The potential role of the DHFS in enhancing medication tracking and adherence was also explored.

Methods

We conducted semi-structured interviews with key informants (N=10). Questions examined perceptions about adherence barriers and facilitators, challenges tracking adherence, and views on the DHFS. Findings informed the development of a survey that was administered online (N=19).

Results

Providers emphasized the importance of fostering open and trustful communication around adherence. The most mentioned challenges to assessing adherence were the patient not disclosing discontinuation immediately (78.9%) and over-reporting adherence (57.9%). The perceived potential benefits of DHFS were the ability to track adherence better (94.7%) and reminders to take the medication (68.4%). Safety to ingest a sensor was as a major perceived barrier (8 4.2%).

Conclusion

Interventions that target providers and doctor-patient communication are warranted to enhance adherence and reduce communication delays around HT discontinuation.

Practice Implications

DHFS has the potential to enhance HT adherence by directly targeting barriers. Future studies should also examine the feasibility of adopting the DHFS with cancer patients.

Medical Mistrust in Black Breast Cancer Patients: Acknowledging the Roles of the Trustor and the Trustee

Studies indicate that Black patients report higher medical mistrust compared to their White counterparts. However, little is known about factors associated with higher medical mistrust among Black breast cancer patients. We examined predictors of medical mistrust and relationships between medical mistrust, subscales of mistrust, and process of care factors to identify opportunities to promote positive healthcare interactions between the trustees (e.g., providers) and Black breast cancer patients, or the trustors. A secondary analysis was conducted of survey data from 210 Black women with confirmed diagnosis of invasive breast cancer. Participants completed telephone surveys consisting of questions pertaining to sociodemographics, attitudes, and beliefs about medical care and breast cancer treatments. Multiple linear regression determined factors associated with medical mistrust and mistrust subscales. Most participants (61%) were over the age of 50 and currently single (64.8%). Women with greater medical mistrust reported less satisfaction with the trustee's technical ability (p < 0.0001) and greater satisfaction with their own propensity to access care (p < 0.05). Additionally, women with public insurance demonstrated greater mistrust (p < 0.01) and suspicion (p < 0.05) than women with private insurance, and women with less education reported greater perceived discrimination than women who have at least a bachelor's degree. Findings from this study may inform future endeavors to educate providers on ways to effectively interact with and treat Black breast cancer patients. Opportunities to develop interventions that address and tackle issues of mistrust as reported by Black patients may contribute to ongoing efforts to reduce health disparities.

Developing a culturally targeted video to enhance the use of genetic counseling in Latina women at increased risk for hereditary breast and ovarian cancer

Disparities for genetic cancer risk assessment (GCRA) for hereditary breast and ovarian cancer (HBOC) persist between Latina and non-Hispanic Whites. There are few tested culturally targeted interventions. We developed a culturally targeted video to enhance GCRA uptake in at-risk Latinas. Interviews with healthcare providers (n = 20) and at-risk Latinas (n = 20) were conducted as formative research to inform the development of the video. Findings from the formative research, health behavior conceptual models, and evidence-based risk communication strategies informed the messages for the script. Then, we conducted a focus group with at-risk Latinas (n = 7) to obtain feedback for final refinement of the script. The final video was piloted for acceptability and potential dissemination in a sample of Latino community health workers (CHWs) (n = 31). Providers and at-risk Latinas suggested using simple language and visual aids to facilitate comprehension. Participants in the focus group identified areas for further clarification (e.g., cost). The result was an 18-min video that illustrates "Rosa's" story. Rosa learns about HBOC risk factors and overcomes barriers to attend genetic counseling. CHWs reported high overall satisfaction with the video (M = 9.61, SD = .88, range 1-10). A culturally targeted video has the potential to reach underserved populations with low literacy and English proficiency.

Adherence to Adjuvant Endocrine Therapy in Insured Black and White Breast Cancer Survivors: Exploring Adherence Measures in Patient Data

BACKGROUND

Adjuvant endocrine therapy (AET) is a critical therapy in that it improves survival in women with hormone receptor-positive (HR+) breast cancer (BC), but adherence to AET is suboptimal. The purpose of this study was to fill scientific gaps about predictors of adherence to AET among black and white women diagnosed with BC.

OBJECTIVE

To assess AET adherence in black and white insured women using multiple measures, including one that uses an innovative statistical approach.

METHODS

Black and white women newly diagnosed with HR+ BC were identified from 2 health maintenance organizations. Pharmacy records captured the type of oral AET prescriptions and all fill dates. Multivariable logistic regression was used to identify predictors of adherence defined in terms of proportion of days covered (PDC; ≥ 80%) and medication gap of ≤ 10 days. A zero-inflated negative binomial (ZINB) regression model was used to identify variables associated with the total number of days of medication gaps.

RESULTS

1,925 women met inclusion criteria. 80% were PDC adherent (> 80%); 44% had a medication gap of ≤ 10 days; and 24% had no medication gap days. Race and age were significant in all multivariable models. Black women were less likely to be adherent based on PDC than white women (OR = 0.72, 95% CI = 0.57-0.90, P < 0.01), and they were less likely to have a medication gap of ≤ 10 days (OR = 0.65, 95% CI = 0.54-0.79, P < 0.001). Women aged 25-49 years were less likely to be PDC adherent than women aged 65-93 years (OR = 0.65, 95% CI = 0.48-0.87, P < 0.001). In the ZINB model, women were without their medication for an average of 37 days (SD = 50.5).

CONCLUSIONS

Racial disparities in adherence to AET in the study highlight a need for interventions among insured women. Using various measures of adherence may help better understand this multidimensional concept. There might be benefits from using both more common dichotomous measures (e.g., PDC) and integrating novel statistical approaches to allow tailoring adherence to patterns within a specific sample.

DISCLOSURES

This research was funded by the National Institutes of Health (R01CA154848). It was also supported in part by the NIH-NCI Cancer Center Support Grant P30 CA016059, the Laboratory of Telomere Health P30 CA51008, and the TSA Award No. UL1TR002649 from the National Center for Advancing Translational Sciences. The contents of this study are solely the responsibility of the authors and do not necessarily represent official views of the National Center for Advancing Translational Sciences or the National Institutes of Health. Bosworth reports grants from Sanofi, Otsuka, Johnson & Johnson, and Blue Cross/Blue Shield of NC and consulting fees from Sanofi and Otsuka. The other authors have nothing to disclose. The datasets generated during and/or analyzed during the current study are not publicly available due to privacy reasons but are available from the corresponding author on reasonable request. The author does not own these data. Data use was granted to the author as part of a data use agreement between specific agencies and organizations.

Psychometric Properties of the Medical Mistrust Index (MMI) in Latina Immigrants

Medical mistrust measures have not been validated in Latino immigrants. This study examined the psychometric properties of the Medical Mistrust Index and its association with health care satisfaction in a sample of Latina immigrants. Participants were 168 self-identified Latinas ≥40 years old. Women were recruited from three Latino-serving health clinics and through a Latino radio program. A bilingual interviewer administered the Medical Mistrust Index in Spanish along with items pertaining to sociodemographic and health care factors. Principal component extraction method was used to evaluate internal consistency reliability to examine Medical Mistrust Index underlying factors. Construct validity was assessed by analyzing the relationship between the Medical Mistrust Index with three related measures (racism, discrimination, trust in doctors). To assess the criterion validity of the Medical Mistrust Index, a logistic regression model examined whether medical mistrust was associated with Latina women's satisfaction with health care controlling for sociodemographic and health care factors. Participants were 51 years old on average, around half had completed High school or less and were uninsured. Most were monolingual Spanish speakers. Two factors: competence and suspicion explained 40% of the total Medical Mistrust Index variance. Internal consistency was favorable and construct validity was supported. Results support the reliability and validity of the Medical Mistrust Index and its association with Latina's satisfaction with health care.

Understanding Medical Mistrust in Black Women at Risk of BRCA 1/2 Mutations

The benefits of genetic counseling and testing for hereditary breast and/or ovarian cancer (HBOC) are well documented; however, Black women are less likely to use these services compared to White women. Mistrust of the medical system has been associated with Black women's use of genetic counseling and testing (GCT). However, relatively little is known about the correlates of medical mistrust in Black women at increased risk of HBOC. In this study, we examined the prevalence and predictors of medical mistrust in 94 Black women at-risk of HBOC. Most women were married (48.7%) and had at least some collegiate education (57.1%). While no predisposing characteristics were significantly related to medical mistrust, bivariate analysis indicated significant relationships between mistrust and fatalism (p=0.04), perceptions of discrimination in the healthcare setting (p=0.01), and self-efficacy in obtaining GCT (p=0.01). Multivariable analysis revealed that women who reported more discriminatory experiences and women with less confidence in obtaining GCT expressed greater medical mistrust. Multilevel approaches are needed to address psychosocial factors associated with feelings of mistrust. Future efforts must not solely focus on educating women on the importance of and need for GCT; addressing structural barriers, such as patient-provider interactions, that contribute to mistrust must become a priority.

Engaging Latina breast cancer survivors in research: building a social network research registry

Disparities persist in breast cancer outcomes between Latina survivors and non-Hispanic Whites. Identifying methods to ensure that Latinas participate in and benefit from translational behavioral medicine research is important to reduce disparities. We developed a "Social Network Research Registry" to enhance Latina survivors' engagement in research and explored the social networks and research/cancer organization participation in this population. We initially recruited 30 Latina breast cancer survivors ("seeds") from community organizations and identified other survivors through snowball sampling. Guided by Social Network Analysis, we assessed the structural (e.g., size) and functional (e.g., social support) characteristics of the network, willingness to join the registry, prior research participation, involvement in cancer organizations, and interest in different types of research and roles in research. The resulting network size was 98, including 53 women who enrolled in the study and 45 who were listed in the network but did not enroll. All enrolled participants (N = 53) agreed to be part of the registry. We identified 15 participants who occupied strategic positions as hubs and/or bridges. Women who were currently involved in cancer organizations were more likely to have participated in research (70.3% vs. 18.8%); χ2 (1, 53) = 11.97, p = .001. Most were interested in surveys/interviews (98%), behavioral interventions (96%), and becoming health promoters (79%). The Social Network Research Registry is an acceptable and feasible strategy to engage underrepresented Latina survivors in research. Social network analysis can be useful to identify members who occupy key positions to enhance recruitment and translational efforts.

Applying the theory of planned behavior to examine adjuvant endocrine therapy adherence intentions

OBJECTIVE

Adherence to adjuvant endocrine therapy (AET) in breast cancer survivors is suboptimal. Using the theory of planned behavior (TPB), this study aimed to identify the strongest predictors from the TPB of AET intentions and past behavior and assessed whether ambivalence and anticipatory emotions increased the predictive capacity of TPB.

METHODS

Two hundred eighty women diagnosed with hormone positive (HR+) breast cancer who filled at least one prescription of AET responded to a survey measuring TPB constructs, attitudinal ambivalence, and anticipatory emotions. The outcomes were intentions to adhere to AET and past medication adherence (previous 2 weeks).

RESULTS

The TPB explained 66% of intentions to adhere to AET (P < 0.001). Ambivalence did not improve the TPB model's predictive value. When emotions were included with TPB, the model explained 70% of adherence intentions F_11,226  = 52.84, P < 0.001 (R² _c  = .70). This increase of 4% in predictability was statistically significant (ΔR²  = 0.04), F_{6, 226}  = 7.90, P < 0.001. Women who self-reported nonadherence in the past 2 weeks differed significantly in the TPB variables, ambivalence, and anticipatory emotions from adherent women. Nonadherent participants reported lower-future intentions to adhere F_{1, 236}  = 5.63, P = 0.018.

CONCLUSIONS

Results suggest key concepts, such as anticipatory positive emotions that should be addressed in future interventions to enhance AET adherence and survivorship.

Spirituality in African-American Breast Cancer Patients: Implications for Clinical and Psychosocial Care

Spirituality has been shown to be important to many individuals dealing with a cancer diagnosis. While African-American breast cancer survivors have been reported to have higher levels of spirituality compared to White women, little is known about how levels of spirituality may vary among African-American breast cancer survivors. The aims of this study were to examine factors associated with spirituality among African-American survivors and test whether spirituality levels were associated with women's attitudes about treatment or health care. The primary outcome, spirituality, was nine-item scale (Cronbach's α = .99). Participants completed standardized telephone interviews that captured sociocultural, healthcare process, and treatment attitudes. Medical records were abstracted post-adjuvant therapy for treatment and clinical information. In bivariate analysis, age was not correlated with spirituality (p = .40). Married/living as married women had higher levels of spirituality (m = 32.1) than single women (m = 30.1). Contextual factors that were associated with higher levels spirituality were: collectivism (r = .44; p < 0.0001, Afrocentric worldview (r = .185; p = .01), and self-efficacy scale (r = .17; p = .02). In multivariable analysis, sociodemographic factors were not significant. Collectivism remained a robust predictor (p < 0.0001). Attitudes about the efficacy of cancer treatment were not associated with spirituality. The high levels of spirituality in African-American survivors suggest consideration of integrating spiritual care within the delivery of cancer treatment. Future studies should consider how spirituality may contribute to positive coping and/or behaviors in African-American women with high levels of spirituality.

Analysis of Delays in Breast Cancer Treatment and Late-Stage Diagnosis in Kazakhstan

Objective:

Although Kazakhstan has made significant investments to improve health and life expectancy of its population, high cancer rates persist, with breast cancer being the most prevalent type. Factors contributing to delays in treatment and late staging for breast cancer patients were assessed.

Methods:

A retrospective follow-up study with registry data identified 4,248 breast cancer patients in sixteen regions of Kazakhstan in 2014. We used logistic regressions to estimate (i) associations of treatment delays with patient demographics and cancer center regions; and (ii) associations of late-stage (III and IV) cancer diagnosis with patient demographics and cancer center regions, with and without controlling for treatment delays.

Results:

Breast cancer patients treated in regions located further away from Almaty City had higher risks of treatment delays. However, the risks of late-stage cancer diagnosis were greater for patients treated in Almaty City and those with treatment delays.

Conclusion:

The main driver of delayed treatment is cancer center region. Residents of Almaty City, a major urban area of Kazakhstan, may have a better access to a tertiary cancer center, resulting in less treatment delays. Referrals of sicker patients from neighboring regions to Almaty City for cancer treatment is likely to increase risks of late-stage diagnosis. New or upgraded cancer centers may reduce treatment delays, but their case-mix is likely to increase.

Provider's Perceptions of Barriers and Facilitators for Latinas to Participate in Genetic Cancer Risk Assessment for Hereditary Breast and Ovarian Cancer

The Comprehensive Cancer Network (NCCN) recommends genetic cancer risk assessment (GCRA) referral to women at high risk of hereditary breast and ovarian cancer. Latinas affected by breast cancer have the second highest prevalence of BRCA1/2 mutations after Ashkenazi Jews. Compared to non-Hispanic Whites, Latinas have lower GCRA uptake. While some studies have identified barriers for GCRA use in this population, few studies have focused on health care providers' perspectives. The purpose of the study was to examine providers' perceptions of barriers and facilitators for at-risk Latina women to participate in GCRA and their experiences providing services to this population. We conducted semi-structured interviews with 20 healthcare providers (e.g., genetic counselors, patient navigators) recruited nationally through snowballing. Interviews were transcribed. Two coders independently coded each interview and then met to reconcile the codes using Consensual Qualitative Research guidelines. Providers identified several facilitators for GCRA uptake (e.g., family, treatment/prevention decisions) and barriers (e.g., cost, referrals, awareness, stigma). Genetic counselors described important aspects to consider when working with at-risk Latina including language barriers, obtaining accurate family histories, family communication, and testing relatives who live outside the US. Findings from this study can inform future interventions to enhance uptake and quality of GCRA in at-risk Latina women to reduce disparities.

Sentiment Analysis of an Online Breast Cancer Support Group: Communicating about Tamoxifen

A better understanding of the breast cancer online narrative is important for a clearer conceptualizing of the role of online platforms in mediating health-related support. Sentiment analysis was conducted on a breast cancer online support group regarding Tamoxifen to understand users' emotions and opinions. This analysis was then contextualized within online social support literature. Out of the 498 users, the most active users were 80% more positive than least active users, while least active users were 48% more negative than most active ones; both differences were statistically significant. The higher the stage of cancer a user had, the less likelihood that she would have posted, and if she were to post, the post would have focused on her side effects and the anxiety/sadness that tailgates those side effects. The lower the stage of cancer a user had, the more likelihood that she would have posted, additionally remained active on the forum, and encouraged more (online) social support. This finding suggests that the online support platform may provide a context that exacerbates support for like-minded users where stronger ties are created around a specific sentiment within the community with less connection from those with dissimilar sentiments to the dominant group.

Understanding Breast Cancer Survivors' Beliefs and Concerns About Adjuvant Hormonal Therapy: Promoting Adherence

Adjuvant hormonal therapy is recommended for women with hormone receptor (HR)-positive breast cancer. Though critical, many patients are non-adherent to this therapy. Few scales have been developed to specifically address beliefs about adjuvant hormonal therapy. This study explores the clarity and relevance of the Beliefs about Medicine Questionnaire (BMQ) in the context of adherence behaviors to hormonal therapy in Black and White breast cancer survivors. We recruited women diagnosed with HR-positive cancer from the Washington, DC, area. An interviewer administered a standardized survey and conducted a cognitive interview. Participants rated the BMQ across three areas: relevance, difficulty, and clarity. We coded whether the comments identified item level issues: limited applicability, unclear reference, unclear perspective, or wording or tone. In-depth interviews were conducted with women who prematurely discontinued hormone therapy. The sample (n = 30) was equally split between Black and White survivors. On average, women were 57.9 years old (SD = 9.0). Overall 77% rated scale as relevant. Cognitive interviews revealed areas of perceived limited acceptability such as the notion of becoming too dependent or the notion of becoming worse if not taking the medication. Women who discontinued hormonal therapy (n = 2) felt ambivalent towards hormonal therapy as they reported having both positive and negative beliefs about the medication. Our study findings suggest new areas for further research and instrument development to accurately measure self-reported beliefs about hormonal therapy by HR-positive breast cancer survivors.

Low-Income African American Fathers' Perceptions and Experiences in a Fatherhood Support Program

We describe the experiences and perceptions of low-income African American fathers enrolled in a fatherhood support program delivered by mentor fathers. Data were collected through focus groups. Client fathers' key motivations for enrolling in the program were improving parenting skills through mentor and peer support. Satisfaction with provider-client interaction (father-to-father) was key, highlighting the important aspect of mentoring for continued program participation. Key program outcomes were improved child and co-parenting relationships. Client fathers had a specific set of psychosocial issues, which they needed addressed. More information is needed to advance the conceptualization of factors associated with low-income African American fathers' lives and their co-parenting roles.

Initiation of Adjuvant Endocrine Therapy in Black and White Women With Breast Cancer

BACKGROUND

Adjuvant endocrine therapy reduces risk of recurrence and mortality in women with hormone receptor-positive breast cancer, yet many women never initiate it. We examined the influence of race, sociocultural factors, and process-of-care factors on initiation of adjuvant endocrine therapy in a racially diverse sample.

PATIENTS AND METHODS

Eligible women were originally recruited for the Narrowing the Gaps in Adjuvant Therapy Study (2006-2011). Sociocultural and process-of-care factors were collected via telephone surveys before adjuvant therapy. Clinical factors were abstracted from charts. Penalized LASSO (least absolute shrinkage and selection operator) logistic regression model was used to identify variables associated with initiation.

RESULTS

Of the 270 women, 55.6% were black and the rest were white. Most women (74.8%) initiated therapy. A significant interaction (P = .008) was found between race and age. Black women aged ≤ 50 years had the lowest initiation (59.7%) compared to black women > 50 years (87.1%), white women ≤ 50 years (73.7%), or white women > 50 years (72.0%). Multivariate analysis found that younger black women exhibited a marginally higher risk of noninitiation compared to older black women. Additionally, ratings of financial access, presence of comorbidities, and levels of communication were all associated with endocrine therapy initiation.

CONCLUSION

Black women ≤ 50 years of age and women with financial constraints may be important subgroups for interventions. Patient-provider communication appears to be an important leverage point to foster therapy uptake.

Biospecimen donation among black and white breast cancer survivors: opportunities to promote precision medicine

PURPOSE

Advances in precision medicine (PM) have potential to reduce and/or eliminate breast cancer disparities in both treatment and survivorship. However, compared to white Americans, black Americans are often underrepresented in genetic research. This report assessed factors that influence receipt of buccal cells via saliva kits.

METHODS

This prospective study recruited women with confirmed hormonal-positive (HR+) breast cancer (BC). A standardized telephone survey collected sociodemographic, socio-cultural (e.g., religiosity), and healthcare process factors. Clinical information was abstracted from medical records. After the baseline survey, return postage-paid envelopes and mouthwash collection kits were mailed. Univariate and adjusted logistic regression models estimated the probability of biospecimen donation.

RESULTS

Seventy percent of the sample provided buccal cells which were of good quality. No differences were noted by race or other demographic factors. In the multivariable logistic model, time spent with providers (OR 1.61 per 1-point increase; 95% CI 1.242, 2.088) and religiosity (OR 0.957 per 1-point increase; 95% CI 0.931, 0.984) remained associated with biospecimen provision. Women with lower-stage cancer (vs. higher stage III+) were more likely to donate biospecimens (p < 0.05).

CONCLUSIONS

Cancer care experiences predicted specimen donation. Understanding the contextual reasons for lower receipt among women with higher religiosity scores and higher stage warrants further examination.

IMPLICATIONS FOR CANCER SURVIVORS

PM is relevant to cancer survivors because of its potential to inform targeted therapies, understand disease resistance, and aide in prediction of toxicity and/or recurrence. Future efforts to launch precision medicine trials with BC survivors may benefit from engaging medical oncologists and/or leveraging patient-provider encounters for trial participation.

Analysis of Delays in Breast Cancer Treatment and Late-Stage Diagnosis in Kazakhstan By Using Electronic Cancer Registry Data

Abstract 27

Background:

Although Kazakhstan (KZ) has made significant investments to improve population health, high cancer rates persist, with breast cancer as the most prevalent. We assessed factors that contribute to delays in treatment and late staging for patients with breast cancer.

Methods:

A retrospective follow-up study design was used. By using 2014 registry data, we identified 4,248 patients with breast cancer who were treated at cancer centers in the 16 KZ regions. Patients with delays in treatment as a result of medical errors and other reasons were identified. We used logistic regression to estimate associations of delays with patient demographics, occupation, and cancer center region; and associations of late-stage (III and IV) cancer diagnosis with delays in treatment while controlling for patient demographics, occupation, and cancer center region.

Results:

Approximately 9% (n = 378) of patients experienced delayed treatment. Older and Russian patients as well as those treated in regions further away from Almaty City had significantly higher adjusted risk of delayed treatment. However, risk of late-stage diagnosis was greater for patients who were treated in Almaty City and for those who were Russian, unemployed, or who had delayed treatment.

Conclusion:

The main driver of delayed treatment was cancer center region. Patients who were treated in Almaty City, where the national cancer research and treatment center is located, had fewer delays in treatment but a higher likelihood of late-stage diagnosis, likely as a result of referrals of sicker patients from neighboring regions. These findings suggest that referrals to new tertiary care centers being developed in KZ may reduce treatment delays but affect facility case mix. Future research will examine the role played by distance to cancer centers in access to specialty care and whether tertiary care is associated with improved outcomes conditional on case mix.

AUTHORS' DISCLOSURES OF POTENTIAL CONFLICTS OF INTEREST

No COIs from the authors.

Endocrine therapy initiation, discontinuation and adherence and breast imaging among 21-gene recurrence score assay-eligible women under age 65

BACKGROUND

Aside from chemotherapy utilization, limited data are available on the relationship between gene expression profiling (GEP) testing and breast cancer care. We assessed the relationship between GEP testing and additional variables and the outcomes of endocrine therapy initiation, discontinuation and adherence, and breast imaging exams in women under age 65 years.

METHODS

Data from five state cancer registries were linked with claims data and GEP results. We assessed variables associated with survivorship care outcomes in an incident cohort of 5014 commercially insured women under age 65 years, newly diagnosed with stage I or II hormone-receptor-positive, human epidermal growth factor receptor 2 (HER2) non-positive breast cancer from 2006 to 2010.

RESULTS

Among tested women, those with high Oncotype DX® Breast Recurrence Score® (RS) were significantly less likely to initiate endocrine therapy than women with low RS tumors (OR 0.40 (95% CI 0.20 to 0.81); P = 0.01). Among all test-eligible women, receipt of Oncotype DX testing was associated with a greater likelihood of endocrine therapy initiation (OR 2.48 (95% CI 2.03 to 3.04); P <0.0001). The odds of initiation were also significantly higher for tested vs. untested women among women who did not initiate chemotherapy within six months of diagnosis (OR 3.25 (95% CI 2.53 to 4.16)), with no effect in women who received chemotherapy. Discontinuation and adherence and breast imaging exams were unrelated to tested status or RS.

CONCLUSIONS

Lower endocrine therapy initiation rates among women with high RS tumors and among untested women not receiving chemotherapy are concerning, given its established efficacy. Additional research is needed to suggest mechanisms to close this gap.

Correlates of Triple Negative Breast Cancer and Chemotherapy Patterns in Black and White Women With Breast Cancer

BACKGROUND

Triple negative breast cancer (TNBC) tumors are estrogen receptor-negative, progesterone receptor-negative, and human epidermal growth factor-negative. TNBC is responsive to chemotherapy, but chemotherapy might be underused in some patient subgroups. The goal of the present study was to characterize the patterns of chemotherapy use (uptake and completion) in TNBC patients.

PATIENTS AND METHODS

Women with primary invasive, nonmetastatic breast cancer were recruited in Washington, DC, and Detroit. Data were collected using a standardized telephone survey that captured sociocultural and health care process factors. Clinical data were abstracted from the medical records. We used χ² tests to access the association between the receipt of chemotherapy use (initiation and completion) and categorical variables, and t tests were used for continuous variables. Logistic regression models were used to evaluate the factors associated with chemotherapy uptake.

RESULTS

Women with TNBC (16% of sample) were more likely to be black than white (68% vs. 32%; P < .05). Among women with TNBC, 60% underwent chemotherapy. Chemotherapy uptake was greater for black than for white women (48.3% vs. 11.7%; P = .01) and in women without (vs. with) healthcare discrimination (35% vs. 25%; P = .04). In multivariable models, only race was associated with the receipt of chemotherapy. Black women were more likely to receive chemotherapy than were white women. The odds ratio of receiving chemotherapy by race was 4.1 (95% confidence interval, 1.3-13.1). Each 1-year increase in age was associated with a lower likelihood of chemotherapy completion (odds ratio, 0.9; 95% confidence interval, 0.826-0.981; P = .02). Women with at least some college were less likely to complete chemotherapy than were those with other education levels (P = .02).

CONCLUSION

A substantial number of TNBC patients failed to receive and/or complete chemotherapy. Differences in chemotherapy uptake by race and sociocultural factors diminished in multivariable models but age and stage remained significant. Suboptimal treatment among women with TNBC could contribute to adverse outcomes. Future investigations are necessary to assess whether the noninitiation and/or noncompletion of chemotherapy is clinically warranted.

The Role of Knowledge on Genetic Counseling and Testing in Black Cancer Survivors at Increased Risk of Carrying a BRCA1/2 Mutation

Genetic counseling and testing (GCT) for hereditary breast and ovarian cancers (HBOC) can inform treatment decisions in survivors. Black women at risk of HBOC have lower GCT engagement. There is limited data about Black survivors' experiences. The goals of this study were to: 1) examine the factors associated with HBOC knowledge and 2) assess the impact of knowledge on GCT engagement in a sample of Black survivors at risk of HBOC. Fifty Black at-risk breast/ovarian cancer survivors participated in a telephone-based survey. GCT use was measured across a continuum (awareness, referral, and use). The primary predictor variable was HBOC knowledge. Other clinical, socio-demographic, and psychosocial variables were included. Multiple linear and ordinal regression models (knowledge as the outcome and GCT as the outcome) assessed the predictors of knowledge and GCT engagement. Less than half (48 %) of survivors were referred to or used GCT services. Knowledge was moderate (M = 7.78, SD = 1.61). In the multivariable analysis, lower age (β = -.34, p = .01) and lower stage (β = -.318, p = .017) were associated with higher knowledge. Higher knowledge (β = .567, p = .006) and higher self-efficacy (β = .406, p = .001) were significantly associated with GCT engagement. Future interventions directed at increasing knowledge, self-efficacy, and improving the referral process are warranted.

The role of knowledge, language, and insurance in endorsement of cancer screening in women of African origin

BACKGROUND

African women have lower use of cancer screening services compared to women born in the United States yet empirical data are limited about their cancer screening attitudes.

OBJECTIVE

To examine factors that are associated with higher endorsement of screening.

METHOD

We conducted a cross-sectional study of 200 women of African origin recruited via community-based outreach activities in Washington, DC. Endorsement of screening was assessed via self-report. The primary independent variables were cancer knowledge and English-language proficiency. Information was also collected about access, cancer-related beliefs, and prior breast screening behaviors.

RESULTS

Most participants (60%) were ≥ 40 years of age, 54% were married, and 77% were insured. Participants more likely to endorse breast cancer screening were insured (vs. uninsured) (odds ratio = 3.37; 95% confidence interval: 1.24, 9.17) and married (odds ratio = 3.23; 95% confidence interval: 1.14, 9.10) controlling for other factors. The likelihood of endorsing screening was higher among participants with English as a primary language (odds ratio = 3.83; 95% confidence interval: 1.24, 11.87) and those with greater breast cancer knowledge (odds ratio = 1.04; 95% confidence interval: 1.01, 1.08, per 1 point increase).

CONCLUSIONS

Average cancer knowledge in the sample was low as were non-conventional causes of cancer. Study results highlight the importance of improving cancer knowledge and reducing barriers related to language and insurance. Future studies are needed to consider nuances among diverse women of African origin.

Enrolling Minority and Underserved Populations in Cancer Clinical Research

Research suggests that community involvement is integral to solving public health problems, including involvement in clinical trials-a gold standard. Significant racial/ethnic disparities exist in the accrual of participants for clinical trials. Location and cultural aspects of clinical trials influence recruitment and accrual to clinical trials. It is increasingly necessary to be aware of defining characteristics, such as location and culture of the populations from which research participants are enrolled. Little research has examined the effect of location and cultural competency in adapting clinical trial research for minority and underserved communities on accrual for clinical trials. Utilizing embedded community academic sites, the authors applied cultural competency frameworks to adapt clinical trial research in order to increase minority participation in nontherapeutic cancer clinical trials. This strategy resulted in successful accrual of participants to new clinical research trials, specifically targeting participation from minority and underserved communities in metropolitan Washington, DC. From 2012 to 2014, a total of 559 participants enrolled across six nontherapeutic clinical trials, representing a 62% increase in the enrollment of blacks in clinical research. Embedding cancer prevention programs and research in the community was shown to be yet another important strategy in the arsenal of approaches that can potentially enhance clinical research enrollment and capacity. The analyses showed that the capacity to acquire cultural knowledge about patients-their physical locales, cultural values, and environments in which they live-is essential to recruiting culturally and ethnically diverse population samples.

Practical Tips for Establishing Partnerships With Academic Researchers: A Resource Guide for Community-Based Organizations

BACKGROUND

Research exists on strategies for successful conduct of community-based participatory research (CBPR). Unfortunately, few published resources are available to advise community-based organizations (CBOs) on preparation for and engagement in CBPR.

OBJECTIVES

We aimed to create a resource for CBOs that describes how an organization can prepare for and participate in CBPR.

METHODS

We used a case study approach of one CBO with a decade-long history of collaboration with academic researchers. We identified lessons learned through a retrospective review of organizational records and the documentation of experiences by CBO leadership and research partners. The findings were then labeled according to CBPR Partnership Readiness Model dimensions.

LESSONS LEARNED

The review of CBO documents and key informant interviews yielded ten practical tips to increase organizational readiness for and engagement in CBPR.

CONCLUSIONS

By understanding the best practices for organizational readiness for and participation in CPBR, CBOs will be better equipped to actively participate in community-academic partnerships.

The feasibility and acceptability of a diet and exercise trial in overweight and obese black breast cancer survivors: The Stepping STONE study

PURPOSE

Black breast cancer survivors have high rates of obesity and low physical activity levels. Little is known about the acceptability and feasibility of interventions in this population.

OBJECTIVE

A two-arm RCT was launched to assess the efficacy of a culturally targeted 12-week multimodal lifestyle intervention in overweight and obese black survivors.

METHODS

Intervention components included nutrition education, exercise groups, and survivor-led motivational interviewing phone sessions. The analytic sample included women who completed the trial (intervention n=10; control n=12). Anthropometric measures, physical activity, and VO2max were assessed at baseline and follow-up. Change scores (intervention vs. control) were assessed with Wilcoxon rank-sum tests. A process evaluation assessed intervention acceptability.

RESULTS

Overall adherence was 70% and overall satisfaction was high (86%). Despite the 5% weight loss target, the intervention group lost 0.8% but BMI improved. Total physical activity levels increased in the intervention vs. control arm (+3501METmin/week vs. +965METmin/week, respectively). VO2max improved in the intervention group (+0.10±1.03kg/L/min). Intervention participants reduced energy intake (-207.3±31.5kcals) and showed improvements in fat intake (-15.5±3.8g), fiber (+3.2±1.2g) and % energy from fat (-4.8±3.1%). Survivors suggested providing diet/exercise information within a cancer context.

CONCLUSIONS

Group and individualized intervention strategies are acceptable to black survivors. Observed differences between self-report and objective outcomes may suggest reporting bias or changes in body composition. Increasing supervised intervention components and assessment of body composition will be important for future trials.

Abstract A92: Patients' experiences with breast cancer care: Do sociocultural factors attenuate racial disparities in ratings of quality?

Background: Several studies have reported disparities in access to quality cancer care in women from racial/ethnic groups compared to non-Hispanic whites. Few reports examine the factors associated with breast cancer patients' ratings of quality care. The goal of this study is to (1) assess racial disparities in patients' ratings of quality care and (2) identify factors that may attenuate these disparities.

Methods: We surveyed and abstracted medical records for 359 breast cancer patients (59% black; 41% white) in Washington, DC and Detroit, MI. Ratings of quality of cancer care were assessed for four domains (general satisfaction, technical quality, interpersonal manner, and financial aspects).

Results: Black women were more likely to report lower ratings on three dimensions including technical (black m=3.99; white m=4.27; p&lt;.001), interpersonal (black m=4.17; white m=4.36; p&lt;.01), and financial (black m=3.82; white m=4.01; p&lt; .05).

General satisfaction ratings: In bivariate analysis, women with higher ratings were those who made surgery decisions with the physician, reported fewer barriers to use health care services (appointment, physical, and emotional barriers) perceived lower discrimination, lower medical mistrust, had high health self-efficacy (maintaining a positive attitude, seeking information, and participating in care), and had high trust in their providers and oncologist (all p&lt;.05). In multivariate analysis, only trust in the oncologist (B=.085, SE=.04, p=.033), trust in providers (B=.069,SE=.02, p=.00), and appointment barrier (B=-.32, SE=.15, p=.04) remained significant.

Technical care ratings: In bivariate analysis, women with higher ratings were those who made decisions about treatment with the physician, were in racially concordant patient-provider relationship, had lower perceived discrimination, lower medical mistrust, higher trust in the providers and in the oncologist, and did not endorse limited office hours or emotional barriers. Additionally, self-efficacy (the three subscales) was associated with higher ratings (all p&lt;.05). In multivariate analysis, medical mistrust (B=-0.20, SE=.007, p=.003) and trust in provider remained significant (B=.083, SE=.011, p=.000).

Interpersonal care ratings: Factors associated with higher ratings in bivariate analysis included: oncologist race concordance, high trust in oncologist and in the provider, high self-efficacy (participating in care). Participants who reported more barriers (limited office hours and health insurance in particular), those with lower perceived discrimination, lower medical mistrust, and lower ratings of communalism had higher ratings of interpersonal care (all p&lt;.05). Only trust in provider (B=.05, SE= .012, p=.000) and total number of barriers (B= -.057, SE=.019, p=.003) remained significant in multivariate analysis.

Financial aspects of care ratings: In bivariate analysis, number of barriers (appointment, health insurance, money, physical, and emotion in particular), religiosity, perceived discrimination, self-efficacy (positive attitude and participating in care), medical mistrust, trust in providers and in oncologist were significantly related to ratings of financial aspects of care (all p&lt;.05). In multivariate analysis, perceived discrimination (B=-.067, SE=.028, p=.019), trust in provider (B=.053, SE=.013, p=.000), insurance (B=-.491, SE=.162, p=.003) and money barrier (B=-.672, SE=.129, p=.000), and religiosity (B=.017, SE=.007, p=.024) remained significant.

Conclusion: Black women reported lower ratings of quality for most domains. Both sociocultural (e.g. communalism) and healthcare process factors (e.g. trust) appear to diminish the impact of race. This study adds to the limited knowledge about black and white women's cancer care experiences and suggests potential intervention targets that may help reduce disparities.

Citation Format: Vanessa B. Sheppard, Alejandra Hurtado de Mendoza, Minna Song, Kepher Makambi. Patients' experiences with breast cancer care: Do sociocultural factors attenuate racial disparities in ratings of quality? [abstract]. In: Proceedings of the Seventh AACR Conference on The Science of Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; Nov 9-12, 2014; San Antonio, TX. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2015;24(10 Suppl):Abstract nr A92.

What Black Women Know and Want to Know About Counseling and Testing for BRCA1/2

Black women are just as likely to have hereditary breast cancer mutations as White women, yet their participation in genetic counseling and testing is substantially lower. This study sought to describe Black women's awareness and perceptions of BRCA1/2 testing and to identify barriers and motivators to seeking BRCA1/2 services. Fifty intercept interviews were conducted with Black women in public places (a professional women's basketball game, a grocery store, a faith-based community event, and the waiting area at a breast care clinic) in Washington, DC. More than half of the women (54%) were aware that genetic tests to determine risk for certain breast and ovarian cancers exist, but the majority (88%) had never heard of BRCA1/2, specifically. After hearing a description of BRCA1/2 genetic markers, 82% stated that they would agree to BRCA1/2 testing if it was offered to them. Perceived advantages of testing included cancer prevention and the ability to share information with family members. Perceived disadvantages included emotional distress associated with identification of the mutation and the potential misuse of results to deny healthcare or employment. Physician recommendation, self-care, and known family history were among the motivators for testing. Women listed possible media and venues for intervention. In spite of low rates of BRCA1/2 testing in the Black community, women in this sample were open to the idea. Interventions that address barriers and include cultural tailoring are necessary.

Rethinking agency and medical adherence technology: applying Actor Network Theory to the case study of Digital Pills

Much literature surrounding medical technology and adherence posits that technology is a mechanism for social control. This assumes that the medical establishment can take away patients' agency. Although power relationships and social control can play a key role, medical technology can also serve as an agentive tool to be utilized. We (1) offer the alternative framework of Actor Network Theory to view medical technology, (2) discuss the literature on medication adherence and technology, (3) delve into the ramifications of looking at adherence as a network and (4) use Digital Pills as a case study of dispersed agency.

Weight Changes in Black and White Women Receiving Chemotherapy Treatment for Breast Cancer

PURPOSE

Weight gain after a breast cancer diagnosis is associated with poor cancer outcomes. Limited research describes patterns of weight change by race. The goal of this study was to assess and compare the percent of weight change and change in body mass index (BMI) after chemotherapy in Black and White breast cancer patients.

METHODS

Black and White women diagnosed with invasive non-metastatic breast cancer were recruited from two metropolitan areas. Medical records were abstracted to obtain clinical (e.g. cancer stage) and treatment variables (e.g. chemotherapy regimen). Weight change was examined in 98 women who underwent chemotherapy. Differences in baseline characteristics by race were evaluated using the chi-square or Fisher's exact test for categorical variables and t-test for continuous variables. We performed bivariate associations between study variables and relative weight change.

RESULTS

Most (62%) participants maintained their pre-treatment weight; 38% gained more than 5% of their baseline weight by the end chemotherapy. Normal weight women had the highest mean increase (3.57; 1.05, 6.10) compared to those that were overweight/obese. Fifteen percent of women shifted to a higher BMI category; 26% of those that were normal became overweight; 17% of overweight patients became obese. Blacks were more likely than whites to shift to a higher BMI (P=0.06).

CONCLUSIONS

Results underscore the need for integrating weight control within cancer treatment plans to prevent weight gain in patients undergoing chemotherapy. Future studies that help to elucidate behaviors and/or biological factors that contribute to weight gain overall and in blacks will be important.

Disparities in breast cancer surgery delay: the lingering effect of race

BACKGROUND

Delays to surgical breast cancer treatment of 90 days or more may be associated with greater stage migration. We investigated racial disparities in time to receiving first surgical treatment in breast cancer patients.

METHODS

Insured black (56 %) and white (44 %) women with primary breast cancer completed telephone interviews regarding psychosocial (e.g., self-efficacy) and health care factors (e.g., communication). Clinical data were extracted from medical charts. Time to surgery was measured as the days between diagnosis and definitive surgical treatment. We also examined delays of more than 90 days. Unadjusted hazard ratios (HRs) examined univariate relationships between delay outcomes and covariates. Cox proportional hazard models were used for multivariate analyses.

RESULTS

Mean time to surgery was higher in blacks (mean 47 days) than whites (mean 33 days; p = .001). Black women were less likely to receive therapy before 90 days compared to white women after adjustment for covariates (HR .58; 95 % confidence interval .44, .78). Health care process factors were nonsignificant in multivariate models. Women with shorter delay reported Internet use (vs. not) and underwent breast-conserving surgery (vs. mastectomy) (p < .01).

CONCLUSIONS

Prolonged delays to definitive breast cancer surgery persist among black women. Because the 90-day interval has been associated with poorer outcomes, interventions to address delay are needed.

Patterns of 21-gene assay testing and chemotherapy use in black and white breast cancer patients

BACKGROUND

In women with early stage, hormone receptor (HR)-positive (HR(+)) breast cancer, the 21-gene recurrence score (RS) assay quantifies recurrence risk and predicts chemotherapy responsiveness. Recent data suggest that not all women with early-stage, HR(+) disease receive this testing. We examined sociodemographic, clinical, and attitudinal factors associated with RS testing receipt and the RS testing effect on chemotherapy use in black and white patients.

PATIENTS AND METHODS

Women with newly diagnosed invasive, nonmetastatic breast cancer were recruited and interviewed to collect sociocultural and health care process data; clinical data were collected from charts. Of the sample (n = 359), 270 had HR(+) disease. Primary analysis focused on those with HR(+) node-negative disease (n = 143); secondary analyses included node-positive women. Logistic regression models evaluated factors associated with receipt of RS testing and chemotherapy.

RESULTS

Among women eligible for the 21-gene assay, 62 patients [43%] received RS testing. In multivariable analysis, older age (odds ratio, 1.04 per 1 year increase; 95% confidence interval, 1.01-1.08) was associated with RS testing after adjustment for covariates. Chemotherapy use was 23%. In multivariable analysis, positive attitudes about chemotherapy and greater risk of recurrence were associated with chemotherapy use (P < .05).

CONCLUSION

Patterns of genomic testing might vary according to age. Efforts to understand factors associated with low testing rates will be important.

Motivators and barriers to Latinas' participation in clinical trials: the role of contextual factors

OBJECTIVE

Latinas are underrepresented in clinical trials despite the rise in Hispanic population. This study examines the factors associated with Latinas' willingness to participate in preventive breast cancer randomized clinical trials (RCTs).

METHODS

Women self-identifying as Latina, over age 40, with no prior history of breast cancer were eligible. Using the Behavior Model for Vulnerable Populations, we administered a survey (n=168) to assess predisposing (e.g., knowledge), enabling (e.g., trust) and need factors (e.g., risk perception). Intention to participate was defined using a lenient (maybe, probably or definitely) and a stringent criterion (probably and definitely). Chi-square tests and logistic regression models examined the associations of predisposing, enabling, and need factors with women's intentions to participate in RCTs.

RESULTS

Most participants (74.9%) were monolingual Spanish-speaking immigrants. Most (83.9%) reported willing to participate in clinical trials using the lenient definition (vs. 43.1% under the stringent definition). Using the lenient definition, the odds of willing to participate in RCTs were significantly lower for unmarried women (OR=.25, 95% CI=.08-.79) and those with lower cancer risk perceptions (OR=.20, 95% CI=.06-.63), while being significantly higher for women with lower language acculturation (OR=6.2, 95% CI=1.8-20.9). Using the stringent definition, women who did not endorse a motivation to enroll to help family members (if they had cancer) had significantly lower odds to report intent (OR=.33, 95% CI=.13-.86).

CONCLUSION

Many RCTs may have limited generalizability due to the low representation of minorities. Culturally targeted interventions that address the importance of family for Latinos may ultimately increase their participation in RCTs.

Abstract B36: Comorbidities in breast cancer survivors: The role of race and socioeconomic factors

Background Breast cancer survivors comprise the largest group of female cancer survivors. Comorbidity accounts for 40% of survival disparity in patients younger than 70 years. Many of these women face risk of developing additional comorbidities due in part to breast cancer therapies and/or lifestyle factors. Because breast cancer survivors with comorbid conditions have been shown to be at greater risk of mortality, understanding characteristics of women who are more likely to be diagnosed with comorbid conditions may help develop lifestyle interventions in this group. Purpose The goal of the study is to examine patterns of comorbid conditions in breast cancer survivors and identify socio-demographic factors that are associated with these conditions. Methods In an observation study, we recruited a convenience sample of women via hospital in reach (Washington DC and Detroit, MI) and outreach efforts (e.g. fliers, posters). Eligible women were: &gt; 21 years, self-identified either as Black or White, English speaker, diagnosed with invasive non-metastatic breast cancer. A total of 678 potentially eligible patients were screened for the study, from which 477 resulted eligible and 395 (82.8%) consented. We excluded 26 women from subsequent analyses due to missing clinical data. The remaining 369 women comprised the final analytic data set. Measures Outcome: Comorbid conditions were abstracted from medical records and included cardiovascular, musculoskeletal, neurological/psychological, pulmonary, and gastrointestinal conditions. Predictors: Sociodemographic factors (race, age, education, marital status, type of insurance, and employment status). Analysis Descriptive statistics were used to characterize the sample. Bivariate (ANOVA, t-test) examined sociodemographic and treatment group differences on outcome. Univariate statistics examined the proportion of participants with specific comorbidities and χ2 tests examined whether the prevalence of specific comorbidities varied between demographic groups (race, education). Results At the time of diagnosis, seventy-three percent of women had at least one comorbidity. The three most common comorbidities were anemia, hypertension, and depression/anxiety. The average Body Mass Index (BMI) was 29.86 (SD=6.65) and 67% of the participants were overweight or obese. Participants with BMI ≤ 25 were less likely to have comorbidities compared to participants with BMI &gt; 25. African-Americans had cardiovascular and pulmonary comorbidities at higher rates than Whites. In particular, African-Americans had hypertension (44% vs. 25%), peripheral vascular disease (21% vs. 3%), and COPD (10% vs. 2%), at higher rates than Whites (p&lt;.05). Participants with lower education including those with ≤HS Diploma/GED and those with some college/Associate's degree had hypertension at higher rates (43% and 48% respectively) compared to those with a Bachelor's degree (26%) (p&lt;.05). Conclusion Several socio-demographic disparities were noted with African Americans and those without a college degree having disproportionate rates of comorbidities. Since race and education has been associated with breast cancer outcomes, targeting these groups for lifestyle interventions (e.g., nutrition, exercise) may be beneficial. Limited data are available about interventions targeted towards survivors with comorbid conditions. Findings can inform targets for future interventions in breast cancer patients who are at risk for premature mortality and elevated morbidity post-cancer diagnosis and primary treatment.

Citation Format: Krista Highland, Alejandra Hurtado de Mendoza, Ocla Kigen, Vanessa B. Sheppard. Comorbidities in breast cancer survivors: The role of race and socioeconomic factors. [abstract]. In: Proceedings of the Sixth AACR Conference: The Science of Cancer Health Disparities; Dec 6–9, 2013; Atlanta, GA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2014;23(11 Suppl):Abstract nr B36. doi:10.1158/1538-7755.DISP13-B36

Risk-reduction opportunities in breast cancer survivors: capitalizing on teachable moments

PURPOSE

With advancements in detection and treatment, the number of breast cancer survivors is growing. To reduce mortality among survivors, tailored health-promotion programs are needed to combat comorbidities. However, the demand for such programs exceed that which is available for a vastly diverse population of survivors. The goal of the present study was to describe the prevalence of comorbidities in a group of breast cancer survivors and to examine associations between biological proximal factors of and the more distal individual-level factors on the number and types of comorbidities.

METHODS

In addition to medical chart reviews, breast cancer survivors (N = 369) from hospitals in two urban locations completed self-report measures. Bivariate analyses examined the relationship between distal and proximal predictors and the outcomes: number of comorbidities and comorbidity types.

RESULTS

Both proximal and distal factors were associated with comorbidities. African American, women with lower education attainment, and older women were more likely to be obese and have more comorbidities than their counterparts. In particular, they were more at risk for cardiovascular disease. Those who initiated hormonal therapy, chemotherapy, and radiation therapy were more likely to have comorbidities. Several psychosocial variables were related to proximal psychosocial factors.

CONCLUSIONS

The present findings highlight the need for targeted health-promotion treatments for breast cancer survivors, particularly for African Americans, those with lower education attainment, those who are obese, and those who may be older. Given the relationships between specific comorbidities and proximal psychosocial factors, future interventions may benefit from tailored approaches.

IMPLICATIONS FOR CANCER SURVIVORS

Tailored interventions for survivors may be more effective when accounting for factors associated with health-promotion engagement.

Frailty and adherence to adjuvant hormonal therapy in older women with breast cancer: CALGB protocol 369901

PURPOSE

Most patients with breast cancer age ≥ 65 years (ie, older patients) are eligible for adjuvant hormonal therapy, but use is not universal. We examined the influence of frailty on hormonal therapy noninitiation and discontinuation.

PATIENTS AND METHODS

A prospective cohort of 1,288 older women diagnosed with invasive, nonmetastatic breast cancer recruited from 78 sites from 2004 to 2011 were included (1,062 had estrogen receptor-positive tumors). Interviews were conducted at baseline, 6 months, and annually for up to 7 years to collect sociodemographic, health care, and psychosocial data. Hormonal initiation was defined from records and discontinuation from self-report. Baseline frailty was measured using a previously validated 35-item scale and grouped as prefrail or frail versus robust. Logistic regression and proportional hazards models were used to assess factors associated with noninitiation and discontinuation, respectively.

RESULTS

Most women (76.4%) were robust. Noninitiation of hormonal therapy was low (14%), but in prefrail or frail (v robust) women the odds of noninitiation were 1.63 times as high (95% CI, 1.11 to 2.40; P = .013) after covariate adjustment. Nonwhites (v whites) had higher odds of noninitiation (odds ratio, 1.71; 95% CI, 1.04 to 2.80; P = .033) after covariate adjustment. Among initiators, the 5-year continuation probability was 48.5%. After adjustment, the risk of discontinuation was higher with increasing age (P = .005) and lower for stage ≥ IIB (v stage I) disease (P = .003).

CONCLUSION

Frailty is associated with noninitiation of hormonal therapy, but it does not seem to be a major predictor of early discontinuation in older patients.

Recruiting Chinese Americans into cancer screening intervention trials: strategies and outcomes

BACKGROUND

Cancer is the leading cause of death among Asian Americans. While Asian Americans are the fastest growing minority population in the United States, they are underrepresented in cancer research and report poor adherence to cancer screening guidelines.

PURPOSE

This study utilized data from two large randomized intervention trials to evaluate strategies to recruit first-generation Chinese American immigrants from community settings and Chinese American physician practices. Findings will inform effective strategies for promoting Asian American participation in cancer control research.

METHODS

Chinese Americans who were non-adherent to annual mammography screening guidelines (Study 1 with 664 immigrant women > 40 years of age) and to colorectal cancer screening guidelines (Study 2 with 455 immigrants > 50 years of age) were enrolled from the greater Washington DC, New York City (NYC), and Philadelphia (PA) areas. Both studies trained bilingual staff to enroll Chinese-speaking participants with the aid of linguistically appropriate fliers and brochures to obtain consent. Study 1 adopted community approaches and worked with community organizations to enroll participants. Study 2 randomly selected potential participants through 24 Chinese American primary-care physician offices, and mailed letters from physicians to enroll patients, followed by telephone calls from research staff. The success of recruitment approaches was assessed by yield rates based on number of participants approached, ineligible, and consented.

RESULTS

Most participants (70%) of Study 1 were enrolled through in-person community approaches (e.g., Chinese schools, stores, health fairs, and personal networks). The final yield of specific venues differed widely (6% to 100%) due to various proportions of ineligible subjects (2%-64%) and refusals (0%-92%). The Study 2 recruitment approach (physician letter followed by telephone calls) had different outcomes in two geographic areas, partially due to differences in demographic characteristics in the DC and NYC/PA areas. The community approaches enrolled more recent immigrants and uninsured Chinese Americans than the physician and telephone call approach (p < .001). Enrollment cost is provided to inform future research studies.

LIMITATIONS

Our recruitment outcomes might not be generalizable to all Chinese Americans or other Asian American populations because they may vary by study protocols (e.g., length of trials), target populations (i.e., eligibility criteria), and available resources.

CONCLUSIONS

Use of multiple culturally relevant strategies (e.g., building trusting relationships through face-to-face enrollment, use of bilingual and bicultural staff, use of a physician letter, and employing linguistically appropriate materials) was crucial for successfully recruiting a large number of Chinese Americans in community and clinical settings. Our data demonstrate that substantial effort is required for recruitment; studies need to budget for this effort to ensure the inclusion of Asian Americans in health research.

African American women's limited knowledge and experiences with genetic counseling for hereditary breast cancer

Genetic counseling and testing for hereditary breast cancer have the potential benefit of early detection and early interventions in African American women. However, African American women have low use of these services compared to White women. We conducted two focus groups with African American women diagnosed with breast cancer (affected group, n = 13) and women with at least one first-degree relative with breast/ovarian cancer (unaffected group, n = 8). A content analysis approach was employed to analyze interview data. Breast cancer survivors had more knowledge about genetic counseling and testing than participants who were unaffected with cancer. However, knowledge about genetic counseling was limited in both groups. Barriers to pursuing genetic counseling and testing included poor understanding of the genetic counseling and testing process, fear of carrying the mutation, concerns about discrimination, and cost. Motivators to participate in genetic counseling and testing included desire to help family members, insurance coverage, and potential of benefiting the larger African American community. Education efforts are needed to increase genetic counseling and testing awareness in the African American community.

Abstract B19: Improving initiation of adjuvant hormonal therapy in black women under 50 may contribute towards narrowing racial gaps in breast cancer

Background: The advent of adjuvant hormonal therapy has greatly improved breast cancer survival in women with hormonal receptor (HR) positive breast cancer. Unfortunately, racial disparities have been noted in both the uptake of adjuvant hormonal therapy and in women with HR positive breast cancer.

Purpose: In a prospective study, we examined the influence of race, socio-cultural factors, and process of care factors on initiation of adjuvant hormonal therapy.

Methods: Eligible women were newly diagnosed with invasive, non-metastatic hormonal receptor positive (HR) breast cancer. Socio-cultural and healthcare factors were collected via telephone surveys; clinical data were abstracted from charts. Stepwise logistic regression models examined associations between hormonal initiation and study factors.

Results: The sample was 56% Black (n=150) and 44% White (n=120). Overall 70% initiated therapy with Black women &lt;50 having the lowest rate of initiation (51%) among all Black and White age groups. A significant interaction (p= .002) was found between race and age so a stratified race – age composite variable was created. In multivariate models, Black women &lt; 50 years were less likely to initiate therapy compared to Whites ≥50 (OR: .28; 95% CI: .10 to .82), whites &lt;50 (OR: 0.19; 95% CI: 0.05 to 0.68), or compared to blacks ≥50 (OR: .34; 95% CI: 0.12 to 0.96). Women reporting having higher ratings of financial access were more likely to initiate therapy as were those with higher ratings of communication with their providers.

Conclusion: Attention to financial aspects of cancer care and patient-provider communication may be useful points of intervention to improve initiation in patients, particularly Black patients &lt;50 years of age.

Citation Format: Vanessa B. Sheppard, Claudine Isaacs, Mahlet G. Tadesse, Melissa Butler, Felicity Harper, Fikru Hirpa. Improving initiation of adjuvant hormonal therapy in black women under 50 may contribute towards narrowing racial gaps in breast cancer. [abstract]. In: Proceedings of the Twelfth Annual AACR International Conference on Frontiers in Cancer Prevention Research; 2013 Oct 27-30; National Harbor, MD. Philadelphia (PA): AACR; Can Prev Res 2013;6(11 Suppl): Abstract nr B19.

Abstract B21: Associations of physical activity with physical functioning and emotional distress among non-Hispanic white and Chinese-American breast cancer survivors

Breast cancer is the most commonly diagnosed cancer and one of the leading causes of cancer deaths for Asian-American women. Asian-American breast cancer survivors often report higher rates of poor quality of life than Non-Hispanic White (NHW) survivors. While physical activities were found to improve breast cancer survivors' health related quality of life (HRQOL), knowledge regarding their quality of life and physical activity behaviors among Asian women is limited. This study examined the association of self-reported physical activity levels with HRQOL outcomes (i.e., physical function and emotional distress) among a sample of Non-Hispanic White (NHW) and Chinese-American breast cancer survivors. We also examined whether the association was modified by high-acculturated Chinese-American (HCA) versus low-acculturated Chinese-American (LCA). We obtained breast cancer cases from California Cancer Registries and recruited women who were over age 21, diagnosed with breast cancer at stage 0-III, and had completed primary treatment within 1-5 years with no recurrence. Acculturation was defined by Chinese-American women's English ability (high vs. low) and years of US residency (median=25 years). Cross-sectional survey data were collected from 381 breast cancer survivors (184 NHW, 68 HCA, and 129 LCA) via telephone. Physical activity was measured using the International Physical Activity Questionnaire (IPAQ) and physical functioning and emotional distress were measured using Patient Reported Outcomes Measurement Information System (PROMIS) items. GLM and multivariate logistic regression analysis was used to model relationships between physical activity levels and patient reported outcomes, controlling for covariates (e.g., body mass index and comorbidity). Results showed that NHW and acculturated Chinese survivors had higher physical functioning than low-acculturated Chinese survivors, although the three groups had no difference in emotional distress. For reported physical activity levels, 42% of NHWs reported high physical activity levels (&gt;150 minutes/week of moderate intensity) compared to the two Chinese-American groups (25% HCA and 13% LCA). Regardless of race, those who reported high physical activity levels were more likely to have higher physical functioning (OR: 3.07, CI: 1.53, 6.17) and lower depression (OR: 0.48, CI: 0.25, 0.91) and anxiety (OR: 0.47, CI: 0.25, 0.90). Specifically, higher levels of physical activity were strongly associated with higher levels physical functioning among NHW and HCA survivors, but this association was less evident for LCA survivors. Moreover, Chinese breast cancer survivors, regardless of acculturation level, those who reported higher levels of physical activities were less likely to report emotional stress compared to NHW women. Overall, results extend upon the importance of promoting physical activity to improve HRQOL outcomes in breast cancer survivors. Differences by race and acculturation status also warrants further investigation in future studies designed to improve HRQOL outcomes in breast cancer survivors, especially in immigrant populations with different acculturation status.

Citation Format: Bang Hyun Kim, Chiranjeev Dash, Scarlett Lin Gomez, Vanessa B. Sheppard, Laura Allen, Yiru Wang, Judy Huei-yu Wang. Associations of physical activity with physical functioning and emotional distress among non-Hispanic white and Chinese-American breast cancer survivors. [abstract]. In: Proceedings of the Twelfth Annual AACR International Conference on Frontiers in Cancer Prevention Research; 2013 Oct 27-30; National Harbor, MD. Philadelphia (PA): AACR; Can Prev Res 2013;6(11 Suppl): Abstract nr B21.

The importance of contextual factors and age in association with anxiety and depression in Black breast cancer patients

OBJECTIVES

Limited research exists on correlates of psychosocial distress in Black breast cancer patients. The goals of the study were to describe the prevalence of distress (anxiety and depression) in Black women with breast cancer and to examine the influence of demographic, clinical, contextual (e.g., self-efficacy, medical mistrust), and process of care factors (e.g., patient satisfaction) on women's level of anxiety and depression.

METHODS

Eighty-two Black women diagnosed with invasive non-metastatic breast cancer were interviewed by phone. Collected data included demographic, clinical, contextual, and process of care factors. Bivariate correlations were used to examine relationships between those variables. Multiple linear regressions were used to examine predictors of anxiety and depression.

RESULTS

About one-third of the women (32%) met cut-off thresholds for distress. Medical mistrust and positive attitude had significant influences on anxiety levels, whereas age and positive attitude were determinants of levels of depression. Participants with higher medical mistrust reported more anxiety (r = .379; p < .001) and depression (r = .337; p = .002), whereas women with higher self-efficacy reported less anxiety (r = -.401; p < .001) and depression (r = -.427; p < .001). Age was inversely related to both anxiety and depression (r = -.224; r = -.296, respectively; p < .05).

CONCLUSIONS

Findings support national recommendations for routine distress screening in the delivery of cancer care particularly in younger Black patients. Interventions targeted to boost self-efficacy or reduce medical mistrust through enhanced patient-provider interactions may decrease psychological distress. Psychosocial needs of younger patients warrant particular attention.

Compliance with national nutrition recommendations among breast cancer survivors in "stepping stone"

INTRODUCTION

Compared with White breast cancer survivors, African American survivors are more likely to be overweight and obese. Differences in weight status may be attributed to differences in dietary intake; however, there is limited research pertaining to the dietary habits of African American breast cancer survivors.

METHODS

We compared baseline dietary intakes of 31 overweight and obese African American breast cancer survivors enrolled in a healthy lifestyle intervention to national dietary guidelines and also examined beverage intake habits. Dietary intake was assessed using the National Cancer Institute's Diet History Questionnaire and beverage intake was assessed using 3-day food intake records.

RESULTS

Overall, the majority of survivors consumed the recommended daily servings of fruits and vegetables (71.0%) and red meat (83.9%); however, survivors exceeded national recommendations for energy intake from fat (64.5%), saturated fat (87.1%), and added sugars (77.4%). Few women met the guidelines for whole grain and fiber intake (6.5% and 35.5%, respectively). Additionally, survivors consumed ~10% of total energy intake from beverages alone and drank only ~3.5 cups of water daily.

CONCLUSIONS

Current dietary guidelines for cancer survivors recommend consuming >5 servings per day of fruits and vegetables and broad guidelines regarding limiting discretionary fat and added sugars but do not specify beverage intake recommendations. Future dietary interventions in African American breast cancer survivors should focus on reducing intake from dietary fat and added sugar, as well as increasing whole grain consumption as a means for increasing daily fiber intake. Furthermore, substituting caloric beverages with water or noncaloric beverages may be a strategy to decrease caloric intake in African American breast cancer survivors. Nutrition information targeting these nutrients could be administered during treatments or doctor's visits as a means to prevent weight gain that often occurs following diagnosis.

Medical mistrust influences black women's level of engagement in BRCA 1/2 genetic counseling and testing

Clinical evidence supports the value of BRCA1/2 genetic counseling and testing for managing hereditary breast and ovarian cancer risk; however, BRCA1/2 genetic counseling and testing are underutilized among black women, and reasons for low use remain elusive. We examined the potential influence of sociocultural factors (medical mistrust, concerns about genetic discrimination) on genetic counseling and testing engagement in a sample of 100 black women at increased risk for carrying a BRCA1/2 mutation. Eligible participants fell into 1 of 3 groups: (1) healthy women with at least 1 first-degree relative affected by breast and/or ovarian cancer, (2) women diagnosed with breast cancer at age less than or equal to 50 years; and (3) women diagnosed with breast and/or ovarian cancer at age greater than or equal to 50 years with either 1 first-degree relative or 2 second-degree relatives with breast and/or ovarian cancer. Participants were recruited from clinical anid community settings and completed a semistructured interview. Study variable relationships were examined using bivariate tests and multivariate regression analysis. As expected, genetic counseling and testing engagement among this sample was low (28%). After accounting for;sociodemographic factors and self-efficacy (beta=0.37, p<.001), women with higher medical mistrust had lower genetic counseling and testing engagement (beta=-0.26, p<.01). Community-level and individual interventions are needed to improve utilization of genetic counseling and testing among underserved women. Along with trust building between patients and providers, strategies should enhance women's personal confidence. The impact of medical mistrust on the realization of the benefits of personalized medicine in minority populations should be further examined in future studies.

A peer-led decision support intervention improves decision outcomes in black women with breast cancer

Previous reports suggest that Black breast cancer patients receive less patient-centered cancer care than their White counterparts. Interventions to improve patient-centered care (PCC) in Black breast cancer patients are lacking. Seventy-six women with histologically confirmed breast cancer were recruited from the Washington, DC area. After a baseline telephone interview, women received an in-person decision support educational session led by a trained survivor coach. The coach used a culturally appropriate guidebook and decision-making model-TALK Back!(©) A follow-up assessment assessed participants' acceptability of the intervention and intermediate outcomes. After the intervention, participants reported increased: self-efficacy in communicating with providers (70 %) and self-efficacy in making treatment decisions (70 %). Compared to baseline scores, post-intervention communication with providers significantly increased (p= .000). This is the first outcome report of an intervention to facilitate PCC in Black breast cancer patients. Testing this intervention using RCTs or similar designs will be important next steps.

Outcomes of a systems-level intervention offering breast cancer risk assessments to low-income underserved women

Hereditary breast and ovarian cancer risk assessments (CRAs) are underutilized by low-income and racial/ethnic minority women, potentially exacerbating cancer-related disparities observed within these populations. We deployed and evaluated a systems-level intervention designed to identify patients potentially at-risk for hereditary breast/ovarian cancer, refer them for CRAs, and facilitate CRA utilization at an urban community-based breast health care center. Cancer family history forms were completed by patients seen at the center during an 18-month period and reviewed by staff for CRA eligibility against published referral criteria. A patient navigator educated eligible patients about the benefits of CRA, navigating interested patients to this service. CRA-specific patient interest and utilization outcomes are reported. In total, 94.7 % of all patients (n = 2,436) completed forms and 65 patients (2.7 %) met CRA eligibility criteria. Most eligible patients (72.3 %) were interested in CRA. Interested patients had a greater risk for hereditary breast/ovarian cancer (i.e., more affected relatives, greater objective risk scores) than uninterested patients: 57.4 % scheduled a CRA appointment and 51.9 % of scheduled patients utilized CRAs. Patients scheduling a CRA were contacted in less time and required fewer follow-up contacts by the patient navigator, and were more likely to be African American, than those who declined a CRA or were lost to follow-up (all p's ≤ .05). The systems-level intervention successfully identified patients eligible for CRA and linked interested and at-risk patients with CRA resources. More intensive patient navigation addressing the unique barriers encountered within this population may be required to enhance utilization.

Narrowing racial gaps in breast cancer chemotherapy initiation: the role of the patient-provider relationship

Chemotherapy improves breast cancer survival but is underused more often in black than in white women. We examined associations between patient-physician relationships and chemotherapy initiation and timeliness of initiation among black and white patients. Women with primary invasive, non-metastatic breast cancer were recruited via hospitals (in Washington, DC and Detroit) and community outreach between July 2006 and April 2011. Data were collected via telephone interviews and medical records. Logistic regression models evaluated associations between chemotherapy initiation and independent variables. Since there were race interactions, analyses were race-stratified. Factors associated with time from surgery to chemotherapy initiation and delay of ≥90 days were evaluated with linear and logistic regressions, respectively. Among eligible women, 82.8 % were interviewed and 359 (90.9 %) of those had complete data. The odds of initiating chemotherapy were 3.26 times (95 % CI: 1.51, 7.06) higher among black women reporting greater communication with physicians (vs. lesser), after considering covariates. In contrast, the odds of starting chemotherapy were lower for white women reporting greater communication (vs. lesser) (adjusted OR 0.22, 95 % CI: 0.07, 0.73). The opposing direction of associations was also seen among the sub-set of black and white women with definitive clinical indications for chemotherapy. Among those initiating treatment, black women had longer mean time to the start of chemotherapy than whites (71.8 vs. 55.0 days, p = 0.005), but race was not significant after considering trust in oncologists, where initiation time decreased as trust increased, controlling for covariates. Black women were also more likely to delay ≥90 days than whites (27 vs. 8.3 %; p = 0.024), but this was not significant after considering religiosity. The patient-physician dyad and sociocultural factors may represent leverage points to improve chemotherapy patterns in black women.