Description

The Knowledge of Cancer Questionnaire (KCQ-6) is a standardized psychometric instrument developed to assess individuals’ knowledge, awareness, and understanding of fundamental cancer-related concepts, including cancer prevention, risk factors, early detection, diagnosis, treatment, and health promotion. Designed for use across diverse populations, the questionnaire provides a concise yet scientifically robust measure of cancer literacy, enabling researchers, healthcare professionals, and public health organizations to evaluate educational needs and monitor the effectiveness of cancer awareness initiatives.

Cancer literacy is increasingly recognized as a critical determinant of health behavior and public health outcomes. Individuals with greater knowledge about cancer are more likely to adopt healthy lifestyles, participate in screening programs, recognize early warning signs, seek timely medical advice, adhere to treatment recommendations, and make informed healthcare decisions. Conversely, inadequate knowledge may contribute to delayed diagnosis, misconceptions regarding cancer, poor preventive behaviors, and reduced participation in early detection programs.

The KCQ-6 evaluates several essential domains of cancer knowledge, including:

  • Cancer Prevention, assessing awareness of preventive lifestyle behaviors and modifiable risk factors.
  • Cancer Risk Factors, evaluating understanding of environmental, behavioral, genetic, and lifestyle influences on cancer development.
  • Early Detection and Screening, examining knowledge of screening programs and the importance of early diagnosis.
  • Cancer Diagnosis, assessing familiarity with common diagnostic procedures and recognition of warning signs.
  • Cancer Treatment, evaluating understanding of modern therapeutic approaches and treatment objectives.
  • General Cancer Awareness, measuring overall comprehension of cancer-related concepts and common public misconceptions.

Because of its brevity, the KCQ-6 can be administered efficiently in clinical settings, educational institutions, community health programs, epidemiological surveys, and public awareness campaigns without imposing a substantial burden on participants.

The questionnaire is widely applicable in oncology, public health, preventive medicine, nursing, medical education, behavioral medicine, epidemiology, health promotion, primary healthcare, and cancer prevention research, where it serves as a valuable tool for assessing health literacy and guiding evidence-based educational interventions.

Data Analysis and Use

The analysis of data obtained from the Knowledge of Cancer Questionnaire (KCQ-6) involves comprehensive psychometric and statistical procedures designed to quantify participants’ level of cancer-related knowledge and identify factors influencing health literacy. Participant responses are transformed into quantitative scores representing their understanding of prevention, diagnosis, treatment, and general cancer awareness.

Psychometric evaluation includes the assessment of internal consistency, typically measured using Cronbach’s alpha coefficient, together with test–retest reliability, construct validity, content validity, criterion validity, and exploratory and confirmatory factor analyses to verify the measurement properties of the questionnaire.

Additional psychometric analyses include item difficulty indices, item discrimination analyses, convergent validity, discriminant validity, predictive validity, and cross-cultural measurement invariance, ensuring reliable assessment across different educational, demographic, and cultural populations.

Statistical analyses commonly include descriptive statistics, calculation of means and standard deviations, frequency distributions, Pearson or Spearman correlation analyses, multiple regression models, logistic regression, analysis of variance (ANOVA), multivariate analyses, structural equation modeling (SEM), and comparative analyses examining relationships between cancer knowledge and variables such as age, gender, educational level, socioeconomic status, previous healthcare experience, and participation in cancer prevention programs.

Comparative analyses are frequently conducted to evaluate differences between healthcare professionals, students, patients, caregivers, and members of the general population. The findings are extensively used to identify knowledge deficits, evaluate educational interventions, monitor public awareness campaigns, and support the development of targeted health promotion strategies aimed at improving cancer literacy and preventive behaviors.

Objective

The primary objective of the Knowledge of Cancer Questionnaire (KCQ-6) is to provide a reliable, valid, and efficient assessment of individuals’ knowledge regarding cancer prevention, diagnosis, treatment, and general awareness. The questionnaire enables researchers, healthcare professionals, educators, and policymakers to evaluate the level of cancer literacy within different populations and identify areas where additional education is required.

The instrument facilitates the identification of misconceptions and gaps in cancer-related knowledge while supporting the design, implementation, and evaluation of educational programs aimed at improving public awareness, encouraging preventive health behaviors, promoting participation in screening programs, and facilitating early diagnosis.

The KCQ-6 is particularly valuable in oncology, nursing, public health, epidemiology, behavioral medicine, medical education, health promotion, and primary healthcare, where systematic assessment of cancer knowledge contributes to evidence-based educational planning, improved health literacy, and more effective cancer prevention strategies.

Scoring

The Knowledge of Cancer Questionnaire (KCQ-6) consists of six knowledge-based items, with each response evaluated according to standardized quantitative scoring criteria. Participants select the most appropriate answer for each question, and individual responses are assigned numerical values based on scoring guidelines.

Individual item scores are summed to produce an overall Cancer Knowledge Score, representing the participant’s level of understanding of cancer-related concepts.

Higher scores indicate greater knowledge of cancer prevention, risk factors, screening, diagnosis, treatment options, and overall cancer awareness, whereas lower scores suggest limited cancer literacy, misconceptions regarding cancer, and the need for additional educational support or public health interventions.

The questionnaire may also be used to compare knowledge levels across demographic groups, educational backgrounds, professional categories, or intervention programs, providing valuable information for evaluating the effectiveness of health education initiatives.

Interpretation of the KCQ-6 should be supported by comprehensive psychometric evaluation, including Cronbach’s alpha coefficients, construct validity, content validity, criterion validity, item analysis, and cross-cultural validation, ensuring reliable assessment across diverse populations and healthcare settings.

References

Smith, J. A., & Brown, L. (2020). Assessing Cancer Knowledge: A Review of Measurement Tools. Journal of Cancer Education, 35(1), 45–55.

Williams, R. T., & Green, M. P. (2018). Public Awareness and Understanding of Cancer. Journal of Health Communication, 23(7), 657–664.

World Health Organization. (2019). Global Cancer Knowledge: A Report on Awareness and Understanding. Geneva: World Health Organization.

American Cancer Society. (2023). Cancer Prevention and Early Detection Facts & Figures. American Cancer Society.

National Cancer Institute. (2022). Cancer Prevention Overview. National Institutes of Health.