Table 2 Tetrachoric correlation matrix for covariates (n = 1179)
Variable | Age | Year of injury | Infantry | Battle injury | Blast injury | ISS | Concussion |
|---|---|---|---|---|---|---|---|
Age | 1.000 | – | – | – | – | – | – |
Year of injury | 0.039 | 1.000 | – | – | – | – | – |
Infantry | −0.226 | 0.276 | 1.000 | – | – | – | – |
Battle injury | −0.141 | 0.357 | 0.683 | 1.000 | – | – | – |
Blast injury | −0.146 | 0.334 | 0.584 | 0.994 | 1.000 | – | – |
ISS | 0.031 | 0.011 | 0.201 | 0.473 | 0.249 | 1.000 | – |
Concussion | −0.176 | 0.486 | 0.464 | 0.798 | 0.851 | 0.095 | 1.000 |