OBJECTIVE: To measure the impact of a population-based tracking system on influenza immunization rates. DESIGN:Thirteen practices with 45 physicians were randomized to a control and two intervention groups. SETTING: Private practices. PATIENTS: All patients aged 65 years and over who were seen in participating physicians' practices within the preceding two years. INTERVENTION: In both intervention groups influenza immunization rates for physicians were recorded weekly as cumulative percentages of their target populations, using a specially prepared poster. In addition, postcard reminders were sent to all the patients in one of the intervention groups. MEASUREMENTS AND MAIN RESULTS:Immunization rates in the two intervention groups were 30% higher than in the control group; the control group immunized 50% (2,405/4,772) of its target population, while the poster and poster/postcard groups immunized 66% (1,420/2,149) and 67% (2,427/3,604), respectively. CONCLUSION: A population-based strategy that monitors performance can significantly improve rates of influenza immunization in private practices.
RCT Entities:
OBJECTIVE: To measure the impact of a population-based tracking system on influenza immunization rates. DESIGN: Thirteen practices with 45 physicians were randomized to a control and two intervention groups. SETTING: Private practices. PATIENTS: All patients aged 65 years and over who were seen in participating physicians' practices within the preceding two years. INTERVENTION: In both intervention groups influenza immunization rates for physicians were recorded weekly as cumulative percentages of their target populations, using a specially prepared poster. In addition, postcard reminders were sent to all the patients in one of the intervention groups. MEASUREMENTS AND MAIN RESULTS: Immunization rates in the two intervention groups were 30% higher than in the control group; the control group immunized 50% (2,405/4,772) of its target population, while the poster and poster/postcard groups immunized 66% (1,420/2,149) and 67% (2,427/3,604), respectively. CONCLUSION: A population-based strategy that monitors performance can significantly improve rates of influenza immunization in private practices.