The NBCSP was
launched in May 2006 and currently offers faecal occult blood testing to all
Australians aged 50, 55 or 65 years of age.
Dr Sumitra Ananda,
Medical Oncology Fellow at Royal Melbourne Hospital, and her coauthors reviewed
data on colorectal cancer cases diagnosed between May 2006 and June 2008 from a
prospective database used at 19 Australian hospitals.
Of the 1628 cases
identified, 1268 had information on the test status as part of the NBCSP.
"We found that
cancers diagnosed through the NBCSP were detected at a much earlier stage," Dr Ananda said.
The data showed that
40 per cent of NBCSP-diagnosed cases were detected during the first stage of
cancer, compared with 14 per cent of symptomatic cases.
The study authors
anticipate that early detection associated with the screening program will
likely lead to an increase in colorectal cancer survival for these patients.
Of the patients
diagnosed through the NBCSP, 63 per cent were from the least socioeconomically disadvantaged areas of Australia, while only 18 per cent were from the most socioeconomically
The authors believe
that more work needs to be done to encourage eligible people to undergo bowel
cancer screening, especially those from disadvantaged areas.
"[The] impact of faecal occult blood test
screening on bowel cancer mortality - is similar to the impact of mammographic
screening on breast cancer mortality," Dr Ananda said.