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Table 2 Tetrachoric correlation matrix for covariates (n = 1179)

From: Co-occurrence of hearing loss and posttraumatic stress disorder among injured military personnel: a retrospective study

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
  1. ISS Injury Severity Score