- Arm I (automated coding system feedback): Physicians receive reports from an automated coding system regarding their performance in administering tobacco-cessation services in each of the five A's (Ask, Advise, Assess, Assist, and Arrange) to identified smokers in comparison with their past performance and in comparison with their anonymous colleagues once every 3 months. One year after randomization, these physicians are further randomized, using the same paired-group approach, to either continue receiving automated coding system feedback for 1 additional year OR to stop receiving feedback.