miércoles, 23 de enero de 2019

Cost Effectiveness of Age-Specific Screening Intervals for People With Family Histories of Colorectal Cancer. - PubMed - NCBI

2018 Jan;154(1):105-116.e20. doi: 10.1053/j.gastro.2017.09.021. Epub 2017 Sep 28.

Cost Effectiveness of Age-Specific Screening Intervals for People With Family Histories of Colorectal Cancer.

Naber SK1, Kuntz KM2, Henrikson NB3, Williams MS4, Calonge N5, Goddard KAB6, Zallen DT7, Ganiats TG8, Webber EM6, Janssens ACJW9, van Ballegooijen M10, Zauber AG11, Lansdorp-Vogelaar I10.

Author information

Abstract

BACKGROUND & AIMS:

Relative risk of colorectal cancer (CRC) decreases with age among individuals with a family history of CRC. However, no screening recommendations specify less frequent screening with increasing age. We aimed to determine whether such a refinement would be cost effective.

METHODS:

We determined the relative risk for CRC for individuals based on age and number of affected first-degree relatives (FDRs) using data from publications. For each number of affected FDRs, we used the Microsimulation Screening Analysis model to estimate costs and effects of colonoscopy screening strategies with different age ranges and intervals. Screening was then optimized sequentially, starting with the youngest age group, and allowing the interval of screening to change at certain ages. Strategies with an incremental cost effectiveness ratio below $100,000 per quality-adjusted life year were considered cost effective.

RESULTS:

For people with 1 affected FDR (92% of those with a family history), screening every 3 years beginning at an age of 40 years is most cost effective. If no adenomas are found, the screening interval can gradually be extended to 5 and 7 years, at ages 45 and 55 years, respectively. From a cost-effectiveness perspective, individuals with more affected FDRs should start screening earlier and at shorter intervals. However, frequency can be reduced if no abnormalities are found.

CONCLUSIONS:

Using a microsimulation model, we found that for individuals with a family history of CRC, it is cost effective to gradually increase the screening interval if several subsequent screening colonoscopies have negative results and no new cases of CRC are found in family members.