Prevalence of appropriate colorectal cancer screening and preferences for receiving screening advice among people attending outpatient clinics

OBJECTIVE

To examine among people attending outpatient clinics aged 50-74 at average risk of colorectal cancer (CRC): 1) The proportion who report: a) faecal occult blood test (FOBT) within the past two years; and b) colonoscopy within the past five years, including the reasons for undergoing colonoscopy; 2) characteristics associated with under-screening; 3) For those who are under-screened, the proportion who are: a) willing to receive help and the acceptability of different methods of receiving help, and; b) unwilling to receive help and reasons for this.

METHODS

Cross-sectional survey of 197 participants attending a major regional hospital in New South Wales, Australia. Multivariable logistic regression was used to determine correlates of under-screening.

RESULTS

A total of 59% reported either FOBT in the past two years or colonoscopy in the past five years. Of those reporting colonoscopy in the past five years, 21% were potentially over-screened. Males were more likely than females to be under-screened. Of those under-screened (41%), fewer than half were willing to receive screening advice. Conclusions and implications for public health: A significant proportion of people attending outpatient clinics are under-screened for CRC, with some people also over-screened. There is a need to explore strategies to overcome both under- and over-screening.

Faecal occult blood testing (FOBT)-based colorectal cancer screening trends and predictors of non-use: findings from the South Australian setting and implications for increasing FOBT uptake

Objective The present study used data from three South Australian population health surveys to examine trends in knowledge, recent use and reasons for use or non-use of faecal occult blood testing (FOBT) for colorectal cancer (CRC) screening from 2011 to 2014. Screening awareness and demographic factors related to non-use were also examined. Methods FOBT trends were examined for respondents aged 50–75 years across survey years (n ~ 1000). Logistic regression analyses were undertaken to determine predictors of non-use and reasons for non-use of FOBT based on latest data. Results The proportion of respondents reporting recent FOBT use has trended up, whereas the proportion reporting non-use has trended down. Awareness of screening recommendations has increased. Respondents who were aware of screening recommendations and those aged 65–69 years were significantly less likely to report non-use. The most commonly reported reasons for FOBT use were as part the national screening program or routine examination, whereas reasons for non-use were not having symptoms and doctor not advising to have the test. Conclusions FOBT screening trends are indicative of the positive effect of the continued expansion of the national screening program. FOBT uptake may be increased by addressing salient barriers, as indicated by persisting reasons for non-use of FOBT. What is known about the topic? Australia has one of the highest age-standardised incidence rates of CRC (or bowel cancer) in the world. Population screening using non-invasive stool-based FOBT was implemented in Australia in 2006 with the introduction of the National Bowel Cancer Screening Program (NBCSP). To date, the NBCSP has been extended to only a small proportion of the target population and FOBT screening rates remain well below desired levels to effect changes in CRC outcomes at the population level. There is a recognised need for more robust data on CRC screening practices to inform interventions aimed at increasing FOBT uptake, beyond the scope of the NBCSP. What does this paper add? The study provides valuable insights into trends of FOBT screening indicators over time in the South Australia, drawing on data from population state health surveys undertaken from 2011 to 2014. A particular advantage of the dataset was that it included data on reasons for use and non-use of FOBT. These data are not routinely assessed in population-level studies of FOBT uptake, although such information would be beneficial for tracking implementation of the national program and identifying salient barriers to FOBT uptake in low-participation groups. Thus, the study also describes factors related to non-use and reasons for non-use of FOBT among the target population for CRC screening. What are the implications for practitioners? Results suggest that there have been considerable shifts in community knowledge and FOBT screening participation rates from 2011 to 2014, reflecting the positive effect of the NBCSP. Reliance on physician recommendation to screen, as well as knowledge deficits related to screening frequency and the perceived relevance of screening remain prominent barriers to FOBT uptake. Recommendations for increasing FOBT uptake are made in view of salient barriers and identified segments of the population less likely to report FOBT use.

Testing the Effectiveness of a Primary Care Intervention to Improve Uptake of Colorectal Cancer Screening: A Randomized Controlled Trial Protocol

BACKGROUND

Screening for colorectal cancer (CRC) significantly reduces mortality associated with this disease. In Australia, the National Bowel Cancer Screening Program provides regular fecal occult blood tests (FOBT) for those aged 50 to 74 years, however, participation rates in the program have plateaued at 36%. Given low uptake in the National Bowel Cancer Screening Program, it is necessary to explore alternate methods to increase CRC screening rates. Primary care is a promising adjunct setting to test methods to increase CRC screening participation. Primary care guidelines support the recommendation and provision of CRC screening to primary care patients. Those in the National Bowel Cancer Screening Program target age range frequently present to their primary care provider.

OBJECTIVE

This study tests the effect that a multicomponent primary care-based intervention has on CRC screening uptake when compared to usual care.

METHODS

Primary care patients presenting for an appointment with their primary care provider complete a touchscreen survey to determine eligibility for the trial. Those aged 50 to 74 years, at average risk of CRC, with no history of CRC or inflammatory bowel disease, who have not had an FOBT in the past 2 years or a colonoscopy in the past 5 years are eligible to participate in the trial. Trial participants are randomized to the intervention or usual care group by day of attendance at the practice. The intervention consists of provision of an FOBT, printed information sheet, and primary care provider endorsement to complete the FOBT. The usual care group receives no additional care.

RESULTS

The primary outcome is completion of CRC screening 6 weeks after recruitment. The proportion of patients completing CRC screening will be compared between trial groups using a logistic regression model.

CONCLUSIONS

CRC screening rates in Australia are suboptimal and interventions to increase screening participation are urgently required. This protocol describes the process of implementing a multicomponent intervention designed to increase CRC screening uptake in a primary care setting.

TRIAL REGISTRATION

Australian New Zealand Clinical Trials Registry ACTRN12616001299493; https://anzctr.org.au/Trial/Registration/TrialReview.aspx?id=371136&isReview=true (Archived by WebCite at http://www.webcitation.org/6pL0VYIj6). Universal Trial Number U1111-1185-6120.