Does payment improve follow-up of pelvic inflammatory disease?

In order to determine whether a monetary incentive would increase clinic follow-up rates in patients treated for pelvic inflammatory disease (PID) in the emergency department (ED), a randomized, prospective study was undertaken. Comparison was made between groups offered $5.00 plus transportation costs and groups offered transportation costs only. Follow-up rates were low in the experimental and control groups, and not statistically different. We conclude that a $5.00 incentive does not increase follow-up rates after ED treatment of PID.