We observed that the units procured by the hospitals were <30% of the units sold through prescriptions written by their af?liated physicians, for almost all contracted hospitals. Hence, to understand the complete impact of the campaign, our analysis was divided into two sections:

• Direct Impact: We used the Hungarian assignment algorithm, based on the Euclidean distance, to identify suitable control hospitals which were contracted in the campaign. The hospitals were compared based on their post period procurement volumes and market shares.
• Indirect Impact: Physicians af?liated to the contracted hospital were compared against physicians af?liated to the respective control hospitals. Metrics used for comparison were post period Rx and market shares.