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Financial Incentives to Promote Colorectal Cancer Screening: A Longitudinal Randomized Control Trial.

Alicea Lieberman1, Ayelet Gneezy1, Emily Berry2

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Summary
This summary is machine-generated.

Financial incentives did not significantly increase fecal immunochemical test (FIT) completion rates over three years. Withdrawal of incentives in the fourth year also showed similar completion rates across groups.

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Area of Science:

  • Public Health
  • Health Behavior Interventions
  • Preventive Medicine

Background:

  • Financial incentives are explored as a strategy to enhance health behaviors.
  • The study investigated the long-term impact of monetary incentives on adherence to health screenings.

Purpose of the Study:

  • To evaluate the effectiveness of financial incentives in improving annual completion rates of mailed fecal immunochemical tests (FIT) over three years.
  • To assess the impact of incentive withdrawal on sustained participation in colorectal cancer screening.

Main Methods:

  • A randomized controlled trial involving patients aged 50-64 years not up-to-date with screening.
  • Participants received mailed FIT kits with varying financial incentives ($5 or $10) or standard outreach over three years.
  • Year four involved re-invitation without incentives for participants who completed all prior tests.

Main Results:

  • No statistically significant difference in FIT completion rates was observed between incentive groups and standard outreach in years 1 and 2.
  • In year 3, a $10 incentive showed a statistically significant increase in FIT completion compared to outreach alone (P=0.033).
  • FIT completion rates were comparable across all groups in year 4 when incentives were removed.

Conclusions:

  • Offering small financial incentives did not consistently increase mailed fecal immunochemical test completion rates.
  • The study suggests limited long-term effectiveness of repeated financial incentives for colorectal cancer screening adherence.