Screening for Advanced Colorectal Cancer with a Blood Test
Author Information
Author(s): Nakajima M, Saito H, Soma Y, Sobue T, Tanaka M, Munakata A
Primary Institution: Hirosaki University School of Medicine
Hypothesis
Does screening with the immunochemical faecal occult blood test reduce the incidence of advanced colorectal cancer?
Conclusion
Screening with the immunochemical faecal occult blood test significantly reduces the risk of developing advanced colorectal cancer.
Supporting Evidence
- Screening with the immunochemical FOBT has been shown to reduce mortality from colorectal cancer by 15–33%.
- Participants who had at least one screening test within 2–4 years before diagnosis had a reduced risk of advanced colorectal cancer by 28–46%.
- The study included 357 cases of advanced colorectal cancer diagnosed between 1989 and 1992.
Takeaway
This study shows that getting a special blood test can help catch serious colon cancer early, which is really important for staying healthy.
Methodology
A case-control study was conducted in Aomori Prefecture, Japan, evaluating screening histories and cancer diagnoses.
Potential Biases
Potential for overestimation of screening efficacy due to self-selection bias.
Limitations
Self-selection bias may affect the results, as those who choose to be screened may differ from those who do not.
Participant Demographics
Participants included men and women aged 40 years or older, with a majority being female.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% CI: 0.29–1.23 for 2 years, 0.30–0.99 for 3 years
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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