TABLE 1.
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.