Cancer Knowledge and Disparities in the Information Age
Harvard University School of Public Health and the Dana Farber Cancer Institute, Boston, Massachusetts 02115, USA. Journal of Health Communication
(Impact Factor: 1.61).
02/2006; 11 Suppl 1(sup001):1-17. DOI: 10.1080/10810730600637426
Increasing information flow often leads to widening gaps in knowledge between different socioeconomic status (SES) groups as higher SES groups are more likely to acquire this new information at a faster rate than lower SES groups. These gaps in knowledge may offer a partial but robust explanation for differential risk behaviors and health disparities between different social groups. Drawing on the Health Information National Trends Survey (HINTS 2003), a national survey of communication behaviors conducted by the National Cancer Institute (NCI), we examine the relationship between publicity and knowledge gaps on two cancer topics that received different levels of publicity: knowledge about tobacco and sun exposure and their respective links to cancer. Analyses of the HINTS 2003 data suggest that differential knowledge levels of causes of cancer between SES groups are one potential explanation of cancer disparities that have been extensively reported in the literature. It is evident that high income and high education are associated with awareness about causes of major cancers such as lung and skin, and may allow people to protect themselves and minimize their risks. The data also show that heavier media attention could attenuate the knowledge gaps though moderate publicity or lack of news coverage may actually widen them. Last, the findings in this article suggest that it is necessary to take into account the SES variation within different racial and ethnic groups rather than mask them by treating the groups as one.
Available from: Danielle Blanch-Hartigan
- "Therefore, even in an environment rich in information, these groups may have a wide gap in knowledge (Viswanath, 2006). One way to mitigate health disparities is to close this knowledge gap through effective health communication (Viswanath et al., 2006). However, appropriate health information cannot be made available without first understanding the complete picture of health information–seeking behaviors. "
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ABSTRACT: With 14 million cancer survivors in the United States, identifying and categorizing their use of sources of cancer-related information is vital for targeting effective communications to this growing population. In addition, recognizing socioeconomic and sociodemographic differences in the use of cancer-related information sources is a potential mechanism for reducing health disparities in survivorship. Fourteen sources of information survivors (N = 519) used for cancer-related information were factor-analyzed to create a taxonomy of source use. The association between social determinants and use of these source types was analyzed in regression models. Factor analysis revealed 5 categories of information source use (mass media; Internet and print; support organizations; family and friends; health care providers), and use varied based on sociodemographic and socioeconomic characteristics. Higher education predicted increased use of all source categories except mass media. African American cancer survivors turned to health care providers as a source for cancer-related information less often than did White survivors. Social determinants predicted differences in the type of cancer-related information sources used. Providers and health communicators should target communication platforms based on the demographic profile of specific survivor audiences.
Available from: PubMed Central
- "Previous studies have stated that patients with lower income levels tend to rely on subjective information from acquaintances rather than objective data and education when it comes to health and disease . Patients with a lower income level may be more resistant to biopsy owing to costs; however, they are more likely to be influenced into acceptance by the doctor's recommendation . "
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This study aimed to improve prostate biopsy compliance by analyzing the factors that influence the acceptance of prostate biopsy by patients to whom transrectal ultrasound (TRUS)-guided prostate biopsy is recommended for suspected prostate cancer.
Materials and Methods
The subjects of this study were 268 patients to whom TRUS-guided prostate biopsy was recommended from January to June 2011 and who completed a questionnaire. Patients who showed a prostate-specific antigen (PSA) increase to more than 4.0 ng/mL or abnormal findings on a digital rectal examination and TRUS were recommended to undergo prostate biopsy. The questionnaire consisted of 9 questions about the subjects' demographic characteristics and 15 questions that assessed their knowledge of prostate disease. Fisher exact probability test was conducted to assess the influence of the demographic characteristics and levels of knowledge of prostate disease on acceptance of prostate biopsy.
The mean age of the subjects was 66.2 years (range, 43-83 years). Of the cohort, 188 patients (70.7%) agreed to the prostate biopsy and 78 patients (29.3%) refused. In terms of demographic characteristics, the patients' acceptance of prostate biopsy was associated only with education level. Patients with relatively lower education levels had a higher acceptance rate for prostate biopsy (80.0% vs. 65.9%, p=0.018). Other demographic factors, as well as the degree of knowledge of prostate disease, had no significant effect on the acceptance rate.
The patients' acceptance of prostate biopsy can be influenced by demographic characteristics, especially education level. Therefore, when prostate biopsy is recommended to patients, their demographic characteristics should be taken into consideration.
Available from: Boyoung Park
- "Level of education is strongly related to the amount of health information sought and understood, especially in the context of cancer-related issues. Indeed, educational level can influence health-communication behaviors  and the acquisition and integration of new information . In this study, a higher level of education was positively associated with HBV vaccine uptake and it was also positively correlated with completing the three-dosage HBV series vaccination. "
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Liver cancer is the second most-frequent cause of cancer death in Korea. Hepatitis B virus (HBV) infection is a major cause of liver cancer, and this disease is effectively prevented by HBV vaccination. This study was conducted to investigate factors associated with the lack of HBV vaccine uptake in the general adult male population in Korea.
Data of men who participated in a nationwide cross-sectional interview survey were analyzed. A total of 2,174 men 40 years of age and older were interviewed between 2006 and 2008. None of the participants was infected with HBV or was experiencing sequelae of an HBV infection.
Only half (50.4%) of the men received one or more dose of the three-dose series of HBV vaccinations, and 32.5% received all three doses. Compared with men who had completed the vaccination regimen, non-vaccinated men were more likely to lack supplemental medical insurance for cancer (odds ratio = 0.66, 95% confidence interval: 0.52–0.84), have lower incomes (p-trend = 0.010), and be less educated (p-trend = 0.021). Lower education was also more prevalent in the non-vaccinated group compared with the incompletely vaccinated group. Those who had completed the vaccination regimen were likely to be more educated than those in the incompletely vaccinated group (p-trend = 0.044). The most commonly cited reason for not obtaining the HBV vaccine was lack of knowledge regarding the need for the vaccination. The number of men who cited this reason decreased as a function of education.
It is important to develop strategic interventions targeted at less-educated men to increase uptake of a complete three-dose series of HBV vaccinations as a primary approach to preventing liver cancer.
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