Background and study aims: Colorectal cancer (CRC) incidence ranks third among all cancers in Switzerland. Screening
the general population could decrease CRC incidence and mortality. The aim of this
study was to analyze the use of the fecal occult blood test (FOBT) and lower gastrointestinal
endoscopy in a representative sample of the Swiss population aged ≥ 50 years.
Methods: Data were analyzed from the 2007 Swiss Health Interview Survey and the prevalence
estimates and 95 % confidence intervals were calculated based on all instances of
lower gastrointestinal endoscopy and FOBT use, as well as on their use for CRC screening.
Uni- and multivariate logistic regression analyses were performed to describe the
association between screening use and sociodemographic characteristics, indicators
of healthcare system use, and lifestyle factors.
Results: In 2007, approximately 36 % of the surveyed people who were aged ≥ 50 years had previously
undergone FOBT and approximately 30 % had previously undergone lower gastrointestinal
endoscopy. CRC screening use was 7.7 % for FOBT (within the past year) and 6.4 % for
lower gastrointestinal endoscopy (within the past 5 years). CRC screening by either
method was 13 %. The major determinants of participation in CRC screening were found
to be sex (male), physician visits during the past year (one or more), type of health
insurance (private), and previous screening for other cancer types.
Conclusions: The results of the 2007 Swiss Health Interview Survey indicate rather low levels
of FOBT and lower gastrointestinal endoscopy use. Furthermore, the results suggest
disparities in the use of CRC screening.
