Characteristics of VAVIS cohort and service members with arterial injuries with and without patency data
| VAVIS cohort | Subset with arterial injuries (490) | P value | ||
| Patency data | No patency data | |||
| n (%) | 527 (100) | 140 (29) | 350 (71) | |
| Age at injury, median (Q1–Q3) | 23 (21–27) | 23 (21–28) | 23 (21–27) | NS |
| Education | NS | |||
| High school | 445 (84) | 115 (82) | 301 (86) | |
| Some college | 66 (13) | 21 (15) | 37 (11) | |
| Other | 16 (3) | X (<3) | 12 (3.0) | |
| Military operation | NS | |||
| OEF | 175 (33) | 54 (39) | 106 (30) | |
| OIF/OND | 348 (66) | 85 (61) | 241 (69) | |
| Military service | NS | |||
| Army | 357 (68) | 90 (64) | 239 (68) | |
| Marines | 149 (28) | 43 (31) | 100 (29) | |
| Air Force/Navy/Coast Guard | 21 (4) | X (5) | 11 (3) | |
| Service rank—enlisted | 503 (95) | 131 (94) | 338 (97) | NS |
| AIS extremities | <0.001 | |||
| Minor (1) | 17 (3) | 0 | 14 (4) | |
| Moderate (2) | 64 (12) | 10 (7) | 46 (13) | |
| Serious (3) | 352 (67) | 91 (65) | 236 (67) | |
| Severe (4) | 89 (17) | 39 (28) | 49 (14) | |
| Critical (5) | 5 (1) | 0 | X (<2) | |
| ISS composite, median (Q1–Q3) | 13 (10–21) | 14 (10–22) | 12.5 (10–20) | 0.04 |
| Minor (1–15) | 314 (60) | 73 (52) | 221 (63) | |
| Moderate (16–25) | 132 (25) | 46 (33) | 75 (21) | |
| Severe (26–50) | 80 (15) | 21 (15) | 53 (15) | |
| Critical (51–75) | X (<1) | 0 | X (<1) | |
| Mechanism of injury | <0.03 | |||
| Explosive | 331 (63) | 73 (52) | 232 (66) | |
| Gunshot wound | 168 (32) | 59 (42) | 99 (28) | |
| Other | 28 (5) | 8 (6) | 19 (5) | |
| Discharge disability* | 343 (65) | 97 (69) | 225 (64) | NS |
| %VA disability, median (Q1–Q3) | 90 (80–100) | 100 (80–100) | 90 (80–100) | <0.05 |
*Service members discharged due to disability.
AIS, Abbreviated Injury Scale; ISS, Injury Severity Score; NS, not significant; OEF, Operation Enduring Freedom; OIF, Operation Iraqi Freedom; OND, Operation New Dawn; Q1–Q3, first and third quartiles; VA, Veterans Affairs; VAVIS, VA Vascular Injury Study.