Australian women's perceptions of breast cancer risk factors and the risk of developing breast cancer

Communicating the results of risk-based breast cancer screening through visualizations of risk: a participatory design approach

BACKGROUND

Risk-based breast cancer (BC) screening raises new questions regarding information provision and risk communication. This study aimed to: 1) investigate women's beliefs and knowledge (i.e., mental models) regarding BC risk and (risk-based) BC screening in view of implications for information development; 2) develop novel informational materials to communicate the screening result in risk-based BC screening, including risk visualizations of both quantitative and qualitative information, from a Human-Centered Design perspective.

METHODS

Phase 1: Interviews were conducted (n = 15, 40-50 years, 5 lower health literate) on women's beliefs about BC risk and (risk-based) BC screening. Phase 2: In three participatory design sessions, women (n = 4-6 across sessions, 40-50 years, 2-3 lower health literate) made assignments and created and evaluated visualizations of risk information central to the screening result. Prototypes were evaluated in two additional sessions (n = 2, 54-62 years, 0-1 lower health literate). Phase 3: Experts (n = 5) and women (n = 9, 40-74 years) evaluated the resulting materials. Two other experts were consulted throughout the development process to ensure that the content of the information materials was accurate. Interviews were transcribed literally and analysed using qualitative thematic analysis, focusing on implications for information development. Notes, assignments and materials from the participatory design sessions were summarized and main themes were identified.

RESULTS

Women in both interviews and design sessions were positive about risk-based BC screening, especially because personal risk factors would be taken into account. However, they emphasized that the rationale of risk-based screening and classification into a risk category should be clearly stated and visualized, especially for higher- and lower-risk categories (which may cause anxiety or feelings of unfairness due to a lower screening frequency). Women wanted to know their personal risk, preferably visualized in an icon array, and wanted advice on risk reduction and breast self-examination. However, most risk factors were considered modifiable by women, and the risk factor breast density was not known, implying that information should emphasize that BC risk depends on multiple factors, including breast density.

CONCLUSIONS

The information materials, including risk visualizations of both quantitative and qualitative information, developed from a Human-Centered Design perspective and a mental model approach, were positively evaluated by the target group.

"I haven't had that information, even though I think I'm really well-informed about most things": a qualitative focus group study on Australian women's understanding and views of potentially modifiable risk factors for breast cancer

BACKGROUND

Building health literacy about potentially modifiable risk factors for breast cancer may help to empower women to make more informed decisions about their breast health; however there has been limited qualitative research on this topic. This study aimed to explore current knowledge, understanding and experience of potentially modifiable risk factors for breast cancer, and views on current and future communication strategies for this information and related interventions.

METHODS

Qualitative study using online focus groups via Zoom in October-November 2022. A diverse sample of women from the Australian community aged 40-74 years were recruited.

RESULTS

Fifty-one women from a range of socioeconomic backgrounds took part in nine focus groups. General knowledge of risk factors for breast cancer in the community is limited, particularly in relation to modifiable factors such as alcohol consumption and postmenopausal obesity, with many women describing feelings of 'shock' following this information. Women overwhelming believed that information on modifiable risk factors for breast cancer should be communicated more widely, however communication preferences for receiving this information varied. There was a strong preference amongst the women for a cascade of information which they believed may then help target greater number of women of all ages and backgrounds. Despite worry about long-term compliance, women also supported various lifestyle interventions which may help them and other women to reduce their overall risk.

CONCLUSIONS

Findings from this study highlight the need for more widespread community communication and education about risk factors for breast, in particular potentially modifiable risk factors such as alcohol consumption and postmenopausal obesity. As breast screening programs in Australia and globally begin to evaluate the potential for risk-related screening this will provide an additional context for primary prevention, hence planning of messaging and piloting of lifestyle-related prevention strategies in breast cancer is needed now. Gaining an understanding of women's preferences for communication and forms of interventions is vital to ensure their engagement.

Public Awareness of Bowel Cancer Risk Factors, Symptoms and Screening in Tasmania, Australia: A Cross-Sectional Study

Tasmania has one of the highest bowel cancer incidence and death rates in the world. Public awareness of risk factors, symptoms, and early detection of bowel cancer is important for minimising the burden of disease. This study measured awareness levels of bowel cancer risk factors, symptoms and screening in Tasmania. An online survey of 3703 participants aged 18 years and older found that alcohol consumption, low physical activity levels, and having diabetes were the least known risk factors for bowel cancer. Over half of all participants were unaware the risk of bowel cancer increased with age, and 53 percent were not confident they would notice a bowel cancer symptom. Over a third of survey respondents did not know that screening commenced at the age of 50. The results indicate that a targeted campaign to increase bowel cancer awareness in Tasmania may help reduce the high rates of morbidity and mortality from the disease.

Accuracy of self-perceived risk perception of breast cancer development in Iranian women

BACKGROUND

The accuracy of subjective risk perception is a matter of concern in breast cancer development. The objective of this study was to evaluate the accuracy of self-perceived risk assessment of breast cancer development and compared to actual risk in Iranian women.

METHODS

The demographic, clinical, and reproductive characteristics of 800 women aged 35-85 years were collected with an in-person interview. The self-perceived risk and the actual risk were assessed using the visual analog scale (VAS) and he Gail model respectively. Gail's cutoff of 1.66% risk was used to categorize the estimated 5-year actual risk as low/average risk (< 1.66%) and high risk (≥ 1.66). In low/average risk, if the self-perceived risk > actual risk, then individuals were considered as overestimating. Similarly, in high-risk women, if the perceived risk < actual risk, then, the subjects were labeled as under-estimate; otherwise, it was labeled as accurate. The Kappa statistics were used to determine the agreement between self-perceived risk and actual risk. ROC analysis was applied to determine the accuracy of self-perceived risk in the prediction of actual risk.

RESULTS

The perceived risk was significantly higher than actual risk (p = 0.001, 0.01 for 5-year and lifetime risk respectively). Both in low and high-risk groups about half of the women over-estimate and underestimate the risk by subjective risk perception. For a 5-year risk assessment, there was no agreement between perceived risk and actual risk (Kappa = 0.00, p = 0.98) but a very low agreement between them in lifetime risk assessment (Kappa = 0.09, p = 0.005). The performance of accuracy of risk perception versus actual risk was very low (AUC = 0.53, 95% CI 0.44-0.61 and AUC = 0.58, 95% CI 0.54-0.62 for the 5-year risk and lifetime risk respectively).

CONCLUSION

The clinical performance of risk perception based on VAS is very poor. Thus, the efforts of the public health education program should focus on the correct perception of breast cancer risk among Iranian women.

Subject positions in screening mammography and implications for informed choice

OBJECTIVE

Screening mammography has potential benefits as well as harms, but these are not always communicated to women. We therefore explored how women discuss screening mammography, the subject positions made available in their discourse, and the implications of these for informed choice. Design: We conducted 16 individual interviews with women aged 44-72 years who were attenders (n = 11) and non-attenders (n = 5) of screening, and analysed transcripts through Foucauldian Discourse Analysis. Main Outcome Measures: A semi-structured interview guide, informed by literature and researcher expertise, was used to collect data. Results: The women constructed screening mammography as either helpful or potentially harmful. We identified three subject positions-The Responsible Woman (who attends screening), The Irresponsible Woman (who does not attend screening), and the Judicious Woman (who engages in alternate breast health practices). Conclusion: These subject positions have the potential to limit women's choices, constrain shared decision-making with health professionals, and restrict women's engagement in risk-reducing behaviours. An expanded range of options ultimately offers an alternate future in which women's autonomy to control their own bodies is better supported.

Risk Assessment for Breast Cancer Development and Its Clinical Impact on Screening Performance in Iranian Women

Introduction

The aim of this study is to estimate the objective and subjective risk and to examine their associations with three forms of breast cancer screening.

Methods

This cross-sectional study was conducted with a sample of 800 women aged 35–85 years from the community setting and outpatient clinic in Babol, the north of Iran. The demographic, socio-economic characteristics and the risk factor profiles were collected through in-person interview. The health belief model (HBM) and visual analog scales were used to assess the women’s perceived risk of breast cancer. The practice of women regarding breast self-examination (BSE), breast clinical examination (BCE), and mammography were measured. We used the Gail model in estimating 5-year and lifetime risk. The logistic regression model was applied to determine the relationship of calculated and perceived risk on screening behaviors.

Results

The mean of estimated 5-year and lifetime risk were 0.89 ±0.89 and 8.87 ±3.84 percent respectively while the perceived personal risk on visual scale perception was much greater than the calculated risk. The high 5-year calculated risk was a predictor of mammography practice but not BSE and BCE; however, after adjusting the subscales of HBM and socio-demographic characteristics, its effect remained significant (adjusted OR=1.97(95% CI: 1.02–3.08)). The perceived risk from HBM in particular self-efficacy (p=0.001) remained positively significant on all forms of screening practice.

Conclusion

While the perceived risk from HBM scale was meaningful in screening performance, the calculated risk from the Gail model had a clinical impact on mammography behaviors independent of HBM scales.

Awareness of cancer risk factors and protective factors among Australian adults

ISSUE ADDRESSED

Up to one-third of incident cancers in Australia are attributable to modifiable factors. Understanding the general public's awareness of cancer risk and protective factors is important for identifying knowledge gaps and informing the development of effective and targeted health promotion strategies.

METHODS

In a telephonic survey of 355 Western Australian adults aged 18-54 years (48% male), with a sample skewed towards low-socio-economic status areas, respondents rated the effect on cancer risk of 11 established cancer risk factors and seven established cancer protective factors.

RESULTS

Most respondents correctly recognised the increased cancer risk from sun tanning (94%), asbestos (92%), pesticide use (92%) and being overweight or obese (86%), and the protective effect of being physically active (82%). Half (52%) of respondents incorrectly believed that red wine decreased or had no effect on cancer risk. One in five respondents (19%) incorrectly believed that sunscreen use increased cancer risk. Only 18% of respondents were aware that human papillomavirus (HPV) vaccination confers a protective effect, while 17% believed it increases risk.

CONCLUSIONS

Although the majority of respondents were aware of certain established cancer risk and protective factors, a sizeable proportion held misconceptions about the cancer risk associated with red wine consumption, sunscreen use and HPV vaccination. SO WHAT?: Health promotion programs designed to educate the public about modifiable cancer risk factors may need to increase public awareness of the safety of preventive factors such as HPV vaccination and sunscreen, and the increased cancer risk from consumption of all alcoholic beverage types, including red wine.

Beliefs about Breast Cancer among Women in the Western Amazon: A Population-Based Study

Objective:

Evaluate the beliefs about the risk factors for breast cancer in a population of women from the western Amazon and determine the factors associated with the higher belief scores presented by this population.

Methods:

A population-based cross-sectional study included 478 women aged >40 years residing in Rio Branco, Acre, Brazil. An American Cancer Society questionnaire was applied to assess the knowledge, attitudes, and beliefs about breast cancer.

Results:

The main beliefs about the risk factors for breast cancer were breast trauma (95%), use of underwire bra (58.5%), and a high number of sexual partners (55.5%). Women from younger age groups presented higher belief scores (Bcoefficient: –0.04, 95% CI: –0.07; –0.01) than those of women from older age groups. A strong association was noted between high knowledge scores of risk factors and signs/symptoms of the disease and high belief scores in the study group (Bcoefficient:0.33;95%CI:0.28;0.38).

Conclusion:

The results indicate the existence of important beliefs related to the risk factors for breast cancer. Women from younger age groups, women who have seen a gynecologist in the past 2 years, and women who had more knowledge about the risk factors and signs and symptoms of breast cancer had higher belief scores.

Hong Kong female’s breast cancer awareness measure: Cross-sectional survey

BACKGROUND

In women worldwide, breast cancer is the most common cancer. Breast cancer accounted for 26.6% of all new cancers in females diagnosed in 2015 in Hong Kong.

AIM

To examine women’s awareness, perception, knowledge, and screening practice of breast cancer in Hong Kong.

METHODS

We carried out a population-based survey using random telephone interviews to women aged 18 or above using the United Kingdom Cancer Research Breast Cancer Awareness Measure (United Kingdom CAM). The data was analysed using proportions, chi-square test (χ²-test) and adjusted odds ratios (ORs).

RESULTS

A total of 1000 participants completed the CAM questionnaire from 1,731 responses (response rate = 57.8%) from September to October 2017. One in five and one in four respondents recalled ≥ 3 early warning signs and ≥ 2 risk factors of breast cancer respectively. The majority (62.6%) reported they were not confident that they would notice a change in their breasts. Among the respondents, 16.8% would have regular mammography at least every two years. In general, 4 in 10 women had tried practices on preventing breast cancer. Respondents with better result in recalling breast cancer signs and symptoms were more likely to seek immediate medical help when noticed a change in their breasts (χ²-test P = 0.038), and more likely had tried prevention practice (χ²-test P < 0.001). Respondents received higher education (secondary school or above) had higher breast cancer awareness (OR = 2.83, CI: 1.61-4.97), more frequent screening (OR = 2.64, CI: 1.63-4.26) and more had tried prevention practices (OR = 2.80, CI: 1.96-4.02) when compared to those with lower education. Those in age groups 31-45 and 46-60 had higher percentages in performing breast self-exam and mammography when compared to the 18-30 and 61 or above age groups.

CONCLUSION

Population-wide public health initiatives should emphasize on prevention and early detection of breast cancer in women, with targeted strategy for those with low education level and advance in age.

Breastfeeding: An Unknown Factor to Reduce Heart Disease Risk Among Breastfeeding Women

BACKGROUND

Breastfeeding confers many health benefits not only to babies but also to their lactating mothers. Breastfeeding is a notable protective factor in the Gail model for breast cancer and is protective for heart disease. Although individuals in the Appalachian region have lower risk of developing breast cancer, their risk of heart disease is elevated compared with the national value for the United States.

SUBJECTS AND METHODS

We surveyed 155 predominantly breastfeeding mothers of toddlers under 3 years old, recruited through parenting groups, daycares, and county extension in Appalachian West Virginia. Participants were asked their perceived comparative risks for breast cancer and heart disease and why they felt their risk was higher, same, or lower than that of the general population.

RESULTS

For breast cancer, 29.7% felt their risk was lower than the general population. For heart disease, 26.5% felt their risk was lower than the general population. Although these risks were highly correlated (p=0.006), there was considerable variability in responses (p<0.03). Qualitative responses for breast cancer risk frequently included breastfeeding (30.3%) and family history (30.3%). Qualitative responses for heart disease noted family history (36.1%) but did not include breastfeeding. A regression analysis found that greater family history, shorter duration of breastfeeding, and fewer pregnancies were associated with greater breast cancer risk perceptions. Family history, lower household income, and current smoking were associated with greater heart disease risk perceptions.

CONCLUSIONS

These well-educated, predominantly lactating women did not know the protective effects of breastfeeding for heart disease. Increased educational efforts about heart disease may be helpful to encourage more women to breastfeed.

Breast cancer risk perceptions of Turkish women attending primary care: a cross-sectional study

BACKGROUND

As the risks and benefits of early detection and primary prevention strategies for breast cancer are beginning to be quantified, the risk perception of women has become increasingly important as may affect their screening behaviors. This study evaluated the women's breast cancer risk perception and their accuracy, and determined the factors that can affect their risk perception accuracy.

METHODS

Data was collected in a cross-sectional survey design. Questionnaire, including breast cancer risk factors, risk perceptions and screening behaviors, answered by 624 women visiting primary health care center (PHCC). "Perceived risk" investigated with numeric and verbal measures. Accuracy of risk perception was determined by women's Gail 5-year risk scores.

RESULTS

The mean age of the participants was 59.62 ± 1.97 years. Of the women 6.7% had a first-degree relative with breast cancer, 68.9% performed breast self-examination and 62.3% had a mammography, and 82.9% expressed their breast cancer worry as "low". The numeric measure correlated better with worry and Gail scores. Of the women 65.5% perceived their breast cancer risk accurately. Among the women in "high risk" group 65.7% underestimated, while in "average risk" group 25.4% overestimated their risk.

CONCLUSIONS

Turkish women visiting PHCC are overtly and overly optimistic. This was especially obvious with the result that nearly one third had had no mammography. There is a need for further studies to understand why and how this optimism is maintained so that better screening strategies can be applied at PHCC. All health workers working at PHCC have to be aware of this optimism to prevent missed opportunities for cancer screening.

Factors influencing receptivity to future screening options for pancreatic cancer in those with and without pancreatic cancer family history

Background

Pancreatic cancer (PC) is considered the most lethal cancer and approximately 10% of PC is hereditary. The purpose of the study was to assess attitudes of at-risk family members with two or more relatives affected with pancreas cancer (PC) toward PC risk and future screening options.

Methods

At-risk family members and primary care controls were surveyed regarding perceived PC risk, PC worry/concern, attitude toward cancer screening, screening test accuracy, and intentions regarding PC screening via blood testing or more invasive endoscopic ultrasound (EUS).

Results

PC family members reported greater perceived risk of PC than controls (54% vs. 6%, respectively, p < 0.0001). PC family members also reported higher levels of PC worry/concern than controls (p < 0.0001), although 19% of PC family members indicated they were “not at all concerned” about getting PC. PC family members indicated greater acceptance of a false-negative result on a PC screening test relative to controls (12% vs. 8%, p = 0.02). Both groups reported high (>89%) receptivity to the potential PC screening options presented, though receptivity was greater among PC family members as compared to controls (p < 0.0001) for EUS. In multivariable analyses, degree of PC concern (p < 0.0001) was associated with intention to screen for PC by blood test and EUS, while perceived PC risk was associated with likelihood of undergoing EUS only (p < 0.0001).

Conclusions

Receptivity to screening options for PC appears high. Clinicians should address behavioral and genetic risk factors for PC and foster appropriate concern regarding PC risk among at-risk individuals.