This study evaluated the effects of prompts and reinforcement on two aspects of hypertension control: a) attendance at a community-based blood pressure screening program and b) follow-up visits to a physician's office by persons identified through screening as at-risk clients. Baseline data showed a decreasing trend in attendance at the screening sessions and a 51% "no show" rate for physician follow-ups. Screening session attendance increased following intervention; however, attendance rates across weeks appeared to vary mainly as a function of the prompting schedule (monthly newsletter announcements ) rather than the availability of reinforcement. Finally, the intervention not only increased the percentage of at-risk clients who saw a physician, but also decreased the latency between the time of initial screening and the follow-up appointment.