Psychosocial mediators of dietary change among Hispanic/Latina breast cancer survivors in a culturally tailored dietary intervention.

OBJECTIVE: To examine psychosocial mediators of the effect of a culturally tailored dietary intervention on dietary change among Hispanic/Latina breast cancer survivors. METHODS: Hispanic/Latina breast cancer survivors (n = 70) were randomized to receive either a 12-week theory-based and culturally tailored dietary change program (intervention group, n = 34), or standard-of-care printed recommendations (control group, n = 36) (ClinicalTrials.gov NCT01414062). Fruit/vegetable intake (F/V), % calories from fat, and hypothesized psychosocial mediators were assessed at baseline, 6 and 12 months. Analysis of covariance assessed intervention effects on psychosocial mediators at 6 and 12 months. Mediation analysis using the bootstrap method evaluated the indirect intervention effects on dietary intake at 6 and 12 months through changes in psychosocial mediators at 6 and 12 months. RESULTS: Compared with controls, at 6 and 12 months, the intervention group reported greater improvements in stages of change (P < .001, P < .001, respectively), self-efficacy (P = .009, P = .002, respectively), snack preference for F/snack preference for F/V (P = .045, P = .002, respectively); at 12 months, the intervention group reported a decrease in chance-oriented external locus of control (P = .02). At 6 months, mediation analysis showed that the intervention effect was associated with an increase of 1.0 (95% CI, -0.1-2.4) serving/day of F/V, compared with the control group, although no indirect effect through the hypothesized psychosocial mediators was observed. At 12 months, the intervention was associated with an increase in 0.5 serving/day F/V through improved taste/snack preference for F/V at 6 and 12 months (95% CIs, 0.1-1.3, 0.0-1.4, respectively). CONCLUSIONS: Future programs can target improving taste/snack preference for F/V to promote dietary change in Hispanic/Latina breast cancer survivors.

Social Support, Diet, and Physical Activity among Latina/Hispanic Women Breast Cancer Survivors.

Diet and physical activity guidelines for cancer survivorship are less likely to be followed by populations of minority cancer survivors, such as Latina/Hispanic women, compared to non-Hispanic White women. It is important to understand psychosocial mechanisms that may increase adherence to healthy lifestyle habits, especially in populations at risk for poorer cancer outcomes. This cross-sectional study examined the relationships between overall social support (SS) and SS from three sources (family, friends, and significant other) with diet (fruit and vegetables, fat, energy density, and diet quality), and moderate-to-vigorous physical activity (MVPA) behaviors in Latina/Hispanic women with a history of breast cancer (n = 85; M age = 55.2; SD = 9.2). Linear regression models and odds ratios were used to examine associations and adjusted for age, income, and acculturation. Family, significant other, and total SS were positively related to total fruit and vegetable intake but SS from friends was not. Higher levels of SS from all sources were each related to a low energy density diet. A higher quality diet was only related to SS from family. SS was not related to fat intake or MVPA. Higher SS from family and a significant other were associated with higher odds of meeting the fruit/vegetable guidelines; (family, OR = 3.72, 95% CI [1.21, 11.39]; significant other, OR = 3.32, 95% CI [1.08, 10.30]). Having more SS from family or a significant other may contribute to Latina/Hispanic women breast cancer survivors meeting national guidelines for a diet high in fruits and vegetables and low in energy density.

Characteristics of Users of the Cook for Your Life Website, an Online Nutrition Resource for Persons Affected by Cancer: Descriptive Study.

BACKGROUND: Accessible nutrition resources tailored to patients with cancer, caregivers of cancer survivors, and people interested in cancer prevention are limited. Cook for Your Life is a bilingual (ie, English and Spanish) website providing science-based, nutrition information for people affected by cancer. OBJECTIVE: The aim of this study was to describe the characteristics of Cook for Your Life website users. METHODS: In December 2020, Cook for Your Life website visitors at least 18 years old were invited to participate in an online English-language survey. A Spanish version was offered in April 2021. Demographic, health, and cooking characteristics were collected. Persons with a cancer history were asked about treatment and side effects. Data were analyzed through December 2021 on those completing over half of the survey. Three groups were compared: people with a history of cancer diagnosis, caregivers of cancer survivors, and the general public (ie, people without a cancer history). Website use data were also compared. RESULTS: Among English-language respondents, 3346 initiated the survey and 2665 (79.65%) completed over half of the questions. Of these, 54.82% (n=1461) had a cancer diagnosis, 8.26% (n=220) were caregivers, and 36.92% (n=984) were from the general public. English-language respondents were US residents (n=2054, 77.07%), with some from Europe (n=285, 10.69%) and Canada (n=170, 6.38%). Cancer survivors were most likely 55 years of age or older, female, non-Hispanic White, with incomes over US $100,000, and college educated. Caregivers and the general public were younger and more racially and geographically diverse. The most common cancer malignancies among English-language cancer survivors were breast (629/1394, 45.12%) and gastrointestinal (209/1394, 14.99%). For Spanish-language respondents, 942 initiated the survey; of these, 681 (72.3%) were analyzed. Of the 681 analyzed, 13.5% (n=92) were cancer survivors, 6.8% (n=46) were caregivers, and 79.7% (n=543) were from the general public. Spanish-language respondents were also more likely to be female and highly educated, but were younger, were from South or Latin America, and had incomes less than US $30,000. Among Spanish-language cancer survivors, breast cancer (27/81, 33%) and gastrointestinal cancer (15/81, 19%) were the most common diagnoses. Website use data on over 2.2 million users from December 2020 to December 2021 showed that 52.29% of traffic was in English and 43.44% was in Spanish. Compared to survey respondents, a higher proportion of website users were male, younger, and from South or Central America and Europe. CONCLUSIONS: Cook for Your Life website users were demographically, socioeconomically, and geographically diverse, especially English-language respondents without a cancer history and all Spanish-language respondents. Improvements on website user diversity and reach for all patients with cancer and research on effective strategies for using this digital platform to support cancer prevention, treatment, and survivorship will continue. TRIAL REGISTRATION: ClinicalTrials.gov NCT04200482; https://www.clinicaltrials.gov/ct2/show/NCT04200482.

Cognitive Functioning and Health in Hispanic/Latina Breast Cancer Survivors.

We examined the effect of waist-to-hip ratio, body mass index (BMI), diet, and physical activity on cognitive functioning among Hispanic/Latina breast cancer survivors in a cross-sectional design study. Participants were 54 Hispanic/Latina breast cancer survivors and completed the NIH Toolbox Cognition Battery. Linear Regression Models tested if statistically significant correlations held with covariates. After controlling for covariates, moderate and hard physical activity were not associated with cognition. However, very hard physical activity was positively associated with faster processing speed (ß = 0.56, p < 0.001) and composite cognition score (ß = 0.36, p < 0.05). Total time (minutes) of moderate to very hard physical activity was positively associated with cognitive flexibility (ß = 0.52, p < 0.001). Total caloric intake was positively associated with episodic memory (ß = 0.35 p < 0.05). BMI and WHR were not associated with cognition. These findings showed positive association with engagement in more MVPA and harder intensity physical activity to better cognitive functioning among Hispanic/Latina breast cancer survivors.ClinicalTrials.gov NCT02780271.

Associations Between Acculturation and Weight, Diet Quality, and Physical Activity Among Latina Breast Cancer Survivors: The ¡Mi Vida Saludable! Study.

BACKGROUND: Among Latinos, greater acculturation to the United States (US) is associated with risk of obesity and obesity-related comorbidities. Less is known about the associations between acculturation and obesity-related modifiable risk factors, such as diet quality and physical activity (PA) among Latina breast cancer survivors. OBJECTIVE: The aim of this study was to explore associations between acculturation and weight status, diet quality, and PA among Latina breast cancer survivors. DESIGN: This is a cross-sectional secondary analysis of baseline data on demographic and clinical characteristics, acculturation, anthropometric measures, diet quality, and PA collected from Latina breast cancer survivors enrolled in the ¡Mi Vida Saludable! (My Healthy Life) behavioral diet and PA intervention trial. PARTICIPANTS/SETTING: Participants were Latina women (n = 167) residing in New York City, with a medical history of stage 0 to III breast cancer, no evidence of recurrent or metastatic disease, and at least 90 days post cancer treatment who participated in the ¡Mi Vida Saludable! randomized controlled trial between July 2016 and October 2018. MAIN OUTCOME MEASURES: Acculturation status was measured by the Short Acculturation Scale for Hispanics score, language preference, place of birth, and duration of US residence. Weight, height, and waist and hip circumferences were measured at an in-person clinic visit. Diet information was collected via 3 telephone-based 24-hour dietary recalls and PA information was collected via staff administered 7-day recalls. STATISTICAL ANALYSES PERFORMED: Linear regression models examined associations between acculturation and weight status, diet quality, and PA. RESULTS: Based on the Short Acculturation Scale for Hispanics acculturation score, more acculturated compared with less acculturated Latinas were younger in age, more educated, and had higher annual household incomes (all, P < .05). Compared with Spanish-speaking Latinas, English-speaking Latinas had larger waist circumference (103 vs 96.1 cm; P = .01) and poorer-quality diets (Healthy Eating Index 2015 scores, 57.3 vs 71.5; P < .001). Greater levels of acculturation were also associated with higher levels of leisure walking at a moderate-to-vigorous intensity (265.8 vs 179.0 min/wk; P =.04). CONCLUSIONS: Greater levels of acculturation were associated with higher central obesity and poorer-quality diets. Future lifestyle modification trials tailored to the unique role of acculturation on adopting behavior change recommendations is a promising next step in this line of research.

¡Mi Vida Saludable! A randomized, controlled, 2 × 2 factorial trial of a diet and physical activity intervention among Latina breast cancer survivors: Study design and methods.

BACKGROUND: Most Latina breast cancer survivors do not meet diet and physical activity (PA) guidelines for cancer survivors and effective lifestyle interventions to adopt and maintain these recommendations are limited, especially among underserved populations. Here we describe the design, methods and enrollment of a 2 × 2 factorial-designed trial testing the separate effects of the ¡Mi Vida Saludable! (My Healthy Life!) intervention program on changes in diet and PA behaviors among Latina breast cancer survivors. METHODS: Latinas with a history of stage 0-III breast cancer, no evidence of recurrent/metastatic disease, and > 90 days post-treatment were primarily identified via cancer registries and physician referral. Participants were randomized to four arms: 1) 4 weeks of in-person group sessions plus 11 months of eHealth communication, 2) in-person group sessions alone, 3) eHealth alone, or 4) control. All participants received a Fitbit to self-monitor PA. Assessments at baseline, 6 and 12 months include diet, PA, anthropometrics, predictors and mediators of behavior change, psychosocial and quality of life outcomes, and blood draw. RESULTS: Of 884 women screened between January 2016 and September 2018, 27% were eligible. Primary reasons for ineligibility included not being willing/able to participate due to work/life responsibilities, health reasons, or transportation. Of 241 eligible women, 167 completed baseline assessment and enrolled. CONCLUSIONS: We successfully enrolled a diverse group of breast cancer survivors representing more than 15 Latin American nationalities to a diet and physical activity trial. If effective, the ¡Mi Vida Saludable! program can be implemented by community groups and medical centers. TRIAL REGISTRATION: ClinicalTrials.gov, NCT02780271, registered May 2016.

¡Cocinar Para Su Salud! Development of a Culturally Based Nutrition Education Curriculum for Hispanic Breast Cancer Survivors Using a Theory-Driven Procedural Model.

We developed a theory-based dietary change curriculum for Hispanic breast cancer survivors with the goal of testing the effects of the intervention on change in dietary intake of fruits/vegetables and fat in a randomized, clinical trial. Social cognitive theory and the transtheoretical model were used as theoretical frameworks to structure curriculum components using the Nutrition Education DESIGN Procedure. Formative assessments were conducted to identify facilitators and barriers common to Hispanic women and test the degree of difficulty and appropriateness of program materials. Focus groups provided valuable insight and informed preimplementation modifications to the dietary program. The result was a systematically planned, evidence-based, culturally tailored dietary intervention for Hispanic breast cancer survivors, ¡Cocinar Para Su Salud! (Cook for Your Health!). The methodology described here may serve as a framework for the development of future dietary interventions among diverse and minority populations. Short- and long-term study results will be reported elsewhere.

Social networks and social support for healthy eating among Latina breast cancer survivors: implications for social and behavioral interventions.

PURPOSE: Little is known about Latina breast cancer survivors' social networks or their perceived social support to achieve and maintain a healthy diet. This paper describes the social networks and perceived support for healthy eating in a sample of breast cancer survivors of predominantly Dominican descent living in New York City. METHODS: Spanish-speaking Latina breast cancer survivors enrolled in a randomized controlled trial of a culturally tailored dietary intervention. Social networks were assessed using Cohen's Social Network Index and a modified General Social Survey Social Networks Module that included assessments of shared health promoting behaviors. Perceived social support from family and friends for healthy, food-related behaviors was assessed. RESULTS: Participants' networks consisted predominantly of family and friends. Family members were more likely than other individuals to be identified as close network members. Participants were more likely to share food-related activities than exercise activities with close network members. Perceived social support for healthy eating was high, although perceived support from spouses and children was higher than support from friends. Despite high levels of perceived support, family was also identified as a barrier to eating healthy foods by nearly half of women. CONCLUSIONS: Although friends are part of Latina breast cancer survivors' social networks, spouses and children may provide greater support for healthy eating than friends. IMPLICATIONS FOR CANCER SURVIVORS: Involving family members in dietary interventions for Latina breast cancer survivors may tap into positive sources of support for women, which could facilitate uptake and maintenance of healthy eating behaviors.

Barriers and facilitators to recruitment to a culturally-based dietary intervention among urban Hispanic breast cancer survivors.

PURPOSE: The purpose of this study was to understand factors related to recruitment to behavioral intervention trials among Spanish-speaking urban Hispanic breast cancer (BC) survivors. METHODS: Potentially eligible Hispanic BC survivors were recruited from the Columbia University Breast Oncology Clinic, signed informed consent, and completed a screening interview on demographics, medical history, acculturation (Short Acculturation Scale for Hispanics), quality of life (QOL), and perceived benefits/risks of research participation. Trial eligibility criteria included stage 0-III BC, completion of adjuvant treatment, Hispanic, fluency in Spanish, willing to be randomized to active arm (9-session in-person culturally-based ¡Cocinar para su salud! dietary modification program) or control arm (written materials). We compared characteristics between eligible women who did and did not enroll in the trial. RESULTS: 102 women completed the screening interview and were eligible to participate. Overall mean age was 57.3 ± 9.5 years, mean time since diagnosis was 3.4 ± 2.1 years, 71% reported annual household income <$15,000 and mean acculturation index score was 1.6 ± 0.6 (scale 1-5, low-high). Of the 102 women, 70 enrolled and 32 declined participation. Reasons stated for non-participation included lack of interest in dietary change, illness, and work constraints. Compared to women who enrolled, women who did not enroll were less likely to be employed (P=0.03) and more likely to only read/speak Spanish (P=0.02). Compared to women who enrolled, non-enrollers were more likely to state that research is costly to participants (P=0.03). CONCLUSION: Lower participation was associated with unemployment, monolingualism, and the perception that research is costly to participants. Future behavioral intervention trials among minority BC survivors need to account for these and other factors that may be related to trial participation.

Food environments are relevant to recruitment and adherence in dietary modification trials.

Few studies have examined the built environment's role in recruitment to and adherence in dietary intervention trials. Using data from a randomized dietary modification trial of urban Latina breast cancer survivors, we tested the hypotheses that neighborhood produce access could act as a potential barrier and/or facilitator to recruitment, and that a participant's produce availability would be associated with increased fruit/vegetable intake, one of the intervention's targets. Eligible women who lived within a higher produce environment had a non-significant trend towards being more likely to enroll in the trial. Among enrollees, women who had better neighborhood access to produce had a non-significant trend toward increasing fruit/vegetable consumption. As these were not a priori hypotheses to test, we consider these analyses to be hypothesis generating and not confirmatory. Results suggest that participants' food environment should be considered when recruiting to and assessing the adherence of dietary intervention studies.

¡Cocinar Para Su Salud!: Randomized Controlled Trial of a Culturally Based Dietary Intervention among Hispanic Breast Cancer Survivors.

BACKGROUND: There is a need for culturally relevant nutrition programs targeted to underserved cancer survivors. OBJECTIVE: Our aim was to examine the effect of a culturally based approach to dietary change on increasing fruit/vegetable (F/V) intake and decreasing fat intake among Hispanic breast cancer survivors. DESIGN: Participants were randomized to Intervention and Control groups. Diet recalls, detailed interviews, fasting blood, and anthropometric measures were collected at baseline, 3, 6, and 12 months. PARTICIPANTS/SETTING: Hispanic women (n=70) with stage 0 to III breast cancer who completed adjuvant treatment and lived in New York City were randomized between April 2011 and March 2012. INTERVENTION: The Intervention group (n=34) participated in ¡Cocinar Para Su Salud!, a culturally based nine-session (24 hours over 12 weeks) intervention including nutrition education, cooking classes, and food-shopping field trips. The Control group (n=36) received written dietary recommendations for breast cancer survivors. MAIN OUTCOME MEASURES: Change at 6 months in daily F/V servings and percent calories from total fat were the main outcome measures. STATISTICAL ANALYSES: Linear regression models adjusted for stratification factors and estimated marginal means were used to compare changes in diet from baseline to 3 and 6 months. RESULTS: Baseline characteristics were the following: mean age 56.6 years (standard deviation 9.7 years), mean time since diagnosis 3.4 years (standard deviation 2.7 years), mean body mass index (calculated as kg/m²) 30.9 (standard deviation 6.0), 62.9% with annual household income ≤$15,000, mean daily servings of all F/V was 5.3 (targeted F/V 3.7 servings excluding legumes/juices/starchy vegetables/fried foods), and 27.7% of daily calories from fat. More than 60% in the Intervention group attended seven or more of nine classes, with overall study retention of 87% retention at 6 months. At month 6, the Intervention group compared with Control group reported an increase in mean servings of F/V from baseline (all F/V: +2.0 vs -0.1; P=0.005; targeted F/V: +2.7 vs +0.5; P=0.002) and a nonsignificant decrease in percent calories from fat (-7.5% vs -4.4%; P=0.23) and weight (-2.5 kg vs +3.8 kg; P=0.22). CONCLUSIONS: ¡Cocinar Para Su Salud! was effective at increasing short-term F/V intake in a diverse population of Hispanic breast cancer survivors.

¡Cocinar Para Su Salud!: Randomized Controlled Trial of a Culturally Based Dietary Intervention among Hispanic Breast Cancer Survivors.

BACKGROUND: There is a need for culturally relevant nutrition programs targeted to underserved cancer survivors. OBJECTIVE: Our aim was to examine the effect of a culturally based approach to dietary change on increasing fruit/vegetable (F/V) intake and decreasing fat intake among Hispanic breast cancer survivors. DESIGN: Participants were randomized to Intervention and Control groups. Diet recalls, detailed interviews, fasting blood, and anthropometric measures were collected at baseline, 3, 6, and 12 months. PARTICIPANTS/SETTING: Hispanic women (n=70) with stage 0 to III breast cancer who completed adjuvant treatment and lived in New York City were randomized between April 2011 and March 2012. INTERVENTION: The Intervention group (n=34) participated in ¡Cocinar Para Su Salud!, a culturally based nine-session (24 hours over 12 weeks) intervention including nutrition education, cooking classes, and food-shopping field trips. The Control group (n=36) received written dietary recommendations for breast cancer survivors. MAIN OUTCOME MEASURES: Change at 6 months in daily F/V servings and percent calories from total fat were the main outcome measures. STATISTICAL ANALYSES: Linear regression models adjusted for stratification factors and estimated marginal means were used to compare changes in diet from baseline to 3 and 6 months. RESULTS: Baseline characteristics were the following: mean age 56.6 years (standard deviation 9.7 years), mean time since diagnosis 3.4 years (standard deviation 2.7 years), mean body mass index (calculated as kg/m(2)) 30.9 (standard deviation 6.0), 62.9% with annual household income ≤$15,000, mean daily servings of all F/V was 5.3 (targeted F/V 3.7 servings excluding legumes/juices/starchy vegetables/fried foods), and 27.7% of daily calories from fat. More than 60% in the Intervention group attended seven or more of nine classes, with overall study retention of 87% retention at 6 months. At month 6, the Intervention group compared with Control group reported an increase in mean servings of F/V from baseline (all F/V: +2.0 vs -0.1; P=0.005; targeted F/V: +2.7 vs +0.5; P=0.002) and a nonsignificant decrease in percent calories from fat (-7.5% vs -4.4%; P=0.23) and weight (-2.5 kg vs +3.8 kg; P=0.22). CONCLUSIONS: ¡Cocinar Para Su Salud! was effective at increasing short-term F/V intake in a diverse population of Hispanic breast cancer survivors.