Table 3.
Military Service History
| (n = 141) | ALS + CTE (n = 9) | p Value | |
|---|---|---|---|
| Service duration, years ± SD | 6.15 ± 6.84 | 7.28 ± 8.86 | 0.639* |
| Branch, n (%) | 0.732† | ||
| Army | 28 (20%) | 3 (33%) | |
| Air Force | 68 (48%) | 3 (33%) | |
| Navy | 35 (25%) | 3 (33%) | |
| Marines | 8 (6%) | 0 (0%) | |
| Coast Guard | 2 (1%) | 0 (0%) | |
| Service era, n (%) | 0.013† | ||
| WWII | 10 (7%) | 0 (0%) | |
| Post-WWII | 2 (1%) | 0 (0%) | |
| Korean | 18 (13%) | 2 (22%) | |
| Post-Korean | 17 (13%) | 0 (0%) | |
| Vietnam | 63 (46%) | 1 (11%) | <0.05‡ |
| Post-Vietnam | 11 (8%) | 2 (22%) | |
| Persian Gulf War 1 | 11 (8%) | 4 (44%) | <0.05‡ |
| Multiple eras | 4 (3%) | 0 (0%) |
WWII, World War II.
*
Mann-Whitney U test.
†
χ2 test for proportions.
‡
Post-hoc z-test with Bonferroni correction for multiple comparisons; service era data available for 136 participants with ALS.