A clinical trial of a financial incentive to go to the tuberculosis clinic for isoniazid after release from jail
Abstract:Setting: Screening for active tuberculosis (TB) and providing isoniazid (INH) preventive therapy in jails are important control measures. In San Francisco, however, historical data showed that 62% of inmates were released before completing preventive therapy, and of those only 3% attended the TB Clinic for follow-up.
Objective and Design: A randomized clinical trial to compare a $5 cash incentive plus standardized TB education with standardized TB education alone in encouraging released inmates to make a first visit to the clinic.
Results: Of 79 persons enrolled in the trial, 77.2% were released before INH completion. Rates of first visit were not significantly different for those receiving $5 plus standardized education (25.8%) versus standardized education alone (23.3%), but were higher than rates seen in historical data for inmates not receiving standardized education. Age was an important predictor of completion of a first visit (odds ratio 1.09, 95% confidence interval 1.02–1.16, P = 0.017). Other variables predicting adherence included intent to adhere, more previous time in jail, stable housing, and being partnered versus alone, although these were not statistically significant.
Conclusion: Standardized education may be important in improving follow-up after release. Further work on the role of a financial incentive in this population is needed.
Document Type: Regular Paper
Affiliations: 1: Department of Community Health Systems, University of California, San Francisco, California, USA 2: Department of Medicine, University of California, San Francisco, California, USA 3: San Francisco City and County Public Health Department, San Francisco, California, USA
Publication date: June 1, 1998
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