In Simple Words
Imagine a classroom exam where students know that random answer sheets will be double-checked by independent outside inspectors; unpredictable audits prevent students from cheating or making fake arrangements with graders.
Surveyed households in Sierra Leone
- No close tie to health worker
- Comparison group
- Friends or relatives of worker
- No clear difference in reported visits
Observed comparison in the audited study. This check does not prove that audits eliminated collusion or fabricated reports.
See source →Research question
Public sector performance evaluation based on beneficiary surveys or worker self-reports risks metric manipulation, output inflation, and worker-client collusion.
Participants
N = 2,009 Community Health Workers and primary female caregivers across 10% of households in 372 Peripheral Health Units in Sierra Leone.
Study Design
Randomized field trial incorporating weekly unannounced back-checks by independent field monitors across a random 25% subset of surveyed households via phone or in-person visits.
Results
Unannounced third-party auditing prevented data fabrication, yielding verified performance data showing no statistically significant difference in reported visit rates between socially connected households (friends/family) and non-connected households (p = 0.439).
Takeaway
Implement mandatory unannounced third-party audit back-checks on a random 25% sample of performance evaluation data to eliminate collusion and reporting bias.
Source and citation
See source →Read alongside the research
Plain-English glossary
Original explanations, informed by the references below. Examples are illustrations, not data from the studies above. The research text stays unchanged.
- Statistically significant
A label used when a result passes a chosen statistical threshold, often p < 0.05. It does not show how large or useful an effect is. A result that is not statistically significant does not prove there is no effect.
ExampleA study reports p = 0.03 against a 0.05 threshold. It passes that test, but the effect could still be too small to matter.
American Statistical Association · Statement on p-values ↗Read more about statistically significant →