Figure 1.

Proportion of laparoscopic cholecystectomy in the four different MABP groups for different time periods. Group 1 Cholecystectomy during index stay. Group 2 No cholecystectomy at index stay but within 30 days of index admission. Group 3 Sphincterotomy but not cholecystectomy within 30 days of index admission. Group 4 Neither cholecystectomy nor sphincterotomy within 30 days of index admission. Proportion in percent.