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Patient Preferences for a Blood-Based Colorectal Cancer Screening Test: Insights From a Conjoint Analysis Survey.

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Summary

Many individuals not up-to-date with colorectal cancer (CRC) screening prefer blood tests over current methods. Test accuracy is a key factor influencing preference for these CRC screening options.

Keywords:
blood-based testcolonoscopycolorectal cancer screeningfecal immunochemical testpatient preferences

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Area of Science:

  • Oncology
  • Preventive Medicine
  • Health Services Research

Background:

  • Colorectal cancer (CRC) screening rates remain suboptimal, with over one-third of individuals not up-to-date.
  • Blood-based tests present a promising alternative to traditional CRC screening methods.
  • Conjoint analysis can quantify preferences for novel screening modalities.

Purpose of the Study:

  • To assess the preference for a hypothetical blood-based CRC screening test among individuals overdue for screening.
  • To identify subgroups with distinct preferences based on decision-making profiles.
  • To evaluate the impact of test accuracy on screening preferences.

Main Methods:

  • Conjoint analysis survey administered to a US nationally representative sample (n=1,009) of average-risk adults (40-75 years) not up-to-date with CRC screening.
  • Latent class analysis used to identify distinct preference groups.
  • Simulations conducted to estimate preference for a blood test versus existing methods, considering accuracy.

Main Results:

  • Two preference groups were identified: those prioritizing test administration (39.4%) and those prioritizing accuracy (60.6%).
  • A majority in both groups showed preference for a blood test every 3 years (65.1% and 53.0%, respectively).
  • Test accuracy for CRC and advanced adenomas significantly influenced screening preferences across all options.

Conclusions:

  • A blood-based CRC screening test is generally preferred by individuals not up-to-date with screening.
  • Preference for blood tests is influenced by their accuracy in detecting CRC and advanced adenomas.
  • Offering blood tests could potentially increase CRC screening uptake among under-screened populations.