Skip to main content

Table 3 Sensitivity, specificity, positive predictive value, and negative predictive value of the total number of observed signs (two or more, three or more, four or more) that led to the diagnosis of concussion

From: A video review of multiple concussion signs in National Rugby League match play

  2 or more total observed signs 3 or more total observed signs 4 or more total observed signs
Number of signs present, concussion present 37 18 8
Number of signs present, concussion absent 75 38 10
Number of signs absent, concussion present 23 42 52
Number of signs absent, concussion absent 21 58 86
Sensitivity (95% CI) 0.62 (0.52–0.71) 0.30 (0.21–0.40) 0.13 (0.07–0.20)
Specificity (95% CI) 0.22 (0.16–0.28) 0.60 (0.55–0.67) 0.90 (0.86–0.94)
Positive predictive value (95% CI) 0.33 (0.28–0.38) 0.32 (0.22–0.43) 0.44 (0.23–0.68)
Negative predictive value (95% CI) 0.48 (0.35–0.61) 0.58 (0.52–0.64) 0.62 (0.60–0.65)