Table.

Results of the Cross-Tabulation Analysis for Discriminating Injured College Football Players (ie, Core or Lower Extremity Sprain or Strain) From Uninjured Players on the Basis of ImPACT Composite Reaction Time 0.545-s Cut Point^a

ImPACT Composite Reaction Time, s	Injury	No. Injury
≥0.545	17	26
<0.545	6	27
Total	23	53

^aFisher exact 1-sided P = .038; sensitivity = 0.74; specificity = 0.51; +likelihood ratio = 1.51; −likelihood ratio = 0.51; odds ratio = 1.507/0.512 = 2.94; 90% confidence interval = 1.19, 7.25; risk ratio = 0.395/0.182 = 2.17; 90% confidence interval = 1.10, 4.30. Reprinted with permission.³¹