期刊
UNITED EUROPEAN GASTROENTEROLOGY JOURNAL
卷 9, 期 2, 页码 256-267出版社
JOHN WILEY & SONS LTD
DOI: 10.1177/2050640620949714
关键词
Colorectal cancer; diagnostic performance; faecal biomarkers; faecal haemoglobin; faecal immunochemical test; primary health care
资金
- Spain's Carlos III Healthcare Institute [PI17/00837]
- (European Regional Development Fund/European Social Fund 'A way to make Europe'/`Investing in your future')
Optimizing colonoscopy resources in primary health care is challenging. This study assessed the impact of different FIT positivity thresholds on CRC detection in primary care, suggesting that a tailored FIT threshold should be based on colonoscopy capacity and CRC prevalence in specific populations.
Background Optimizing colonoscopy resources is challenging, and information regarding performing diagnostic quantitative faecal immunochemical test (FIT) in daily clinical practice in primary health care is still limited. This study aimed to assess the sensitivity, specificity, positive predictive value and negative predictive value of varying FIT positivity thresholds on colorectal cancer (CRC) detection in primary health care. Methods A retrospective cohort study of 38,675 asymptomatic and symptomatic patients with a FIT (OC-Sensor (TM)) performed between 2012 and 2016 in a primary health-care setting, using a clinical laboratory database of two Spanish areas linked with the National Health System's Hospital Discharge Records Database. The primary outcome was 2-year CRC incidence. Results The mean age of the participants was 63.2 years; 17,792 (46.0%) were male. CRC prevalence was 1.7% (650/38,675). The percentage of patients with a FIT result above the threshold was 20.7% and 14.6% for 10 mu g Hb/g faeces and 20 mu g Hb/g faeces thresholds, respectively. Sensitivity was 90.5% (95% confidence interval 88.0-92.5%) at a 10 mu g Hb/g faeces threshold, and this decreased by 3.1% when a 20 mu g Hb/g faeces threshold was used. The negative predictive value for CRC was at least 99.2% in any subgroup analysed. At a 20 mu g Hb/g faeces threshold, less than one additional CRC would be missed per 1000 patients investigated, while approximately 1.3 times more colonoscopy examinations were needed to identify an incidence of CRC using the lowest threshold for any situation analysed. Conclusions In primary health care, a quantitative FIT threshold should be tailored to colonoscopy capacity and CRC prevalence in specific populations.
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