Temporal Patterns of New Patient Visit Rates in Returning and Newly Insured Relative to Continuously Insured Enrollees; Notes: Rates were estimated by GEE Poisson Regression and adjusted for propensity class, sex, age, income, Primary Care Service Area, distance to nearest hospital, psychological disorders other than depression and anxiety, and alcohol and drug dependency. Rates in newly and returning insured are presented relative to rates in continuously insured to control for temporal trends in utilization that were unrelated to time on insurance.