Fig. 1From: Reduction in unplanned hospitalizations associated with a physician focused intervention to reduce potentially inappropriate medication use among older adults: a population-based cohort studyCrude Hospitalizations Rates during the Pre-Intervention, Intervention, and Post-Intervention Periods. aThe quality improvement initiative was implemented in stages beginning in the fourth quarter (Q4) of 2007 and ending in 2009 (Q4). The beginning and end of the intervention period reflects a one-year lag from the start and end of the interventionBack to article page