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. Author manuscript; available in PMC: 2014 Nov 19.
Published in final edited form as: J Trauma Acute Care Surg. 2012 Dec;73(6):1500–1506. doi: 10.1097/TA.0b013e318270d983

TABLE 1.

Mean Number of Cases Per Graduating Resident by Period

Period I Period II Period III Period IV




Procedure Type AY1989–1999 to
AY1993–1994
AY1994–1995 to
AY1998–1999
AY1999–2000 to
AY2002–2003
AY2003–2004 to
AY2009–2010
TMCs 904.1 (210.0) 950.6 (178.9) 949.2 (198.0) 924.1 (167.6)
ACGME-designated trauma operations 72.5 (45.7) 54.5 (34.0) 39.3 (18.9) 39.4 (21.3)
Operations for intra-abdominal trauma 30.9 23.5 18.0 16.8
Operations for splenic trauma 4.7 (4.0) 3.7 (3.7) 3.1 (2.8) 3.0 (2.9)
Operations for liver trauma 3.9 3.1 2.1 1.9

SDs for the period means are reported in parentheses and were only able to be calculated for TMCs, ACGME-designated total trauma cases, and operations for splenic trauma. The “Intra-abdominal Trauma” category was generated from subtotals of operations for esophageal, gastric, duodenal, small bowel, colon, splenic, hepatic, kidney, and pancreatic trauma, as well as repair of the abdominal aorta or vena cava and cases coded as trauma laparotomy or laparoscopy. One-way ANOVA p < 0.001 for each category or type of operation; results of pairwise comparisons (Bonferroni adjustment) are reported in the text.