Table 4.

Comparison of athletes with concussion to healthy athletes on saccadic parameters. P-values represent Mann-Whitney U results. Sample sizes below each variable represent the number of non-concussed and number of concussed, respectively, individuals in each analysis, representing the number of individuals from each group who could complete the task.

Saccadic Parameter	Non-concussed Median	Non-concussed Range	Concussed Median	Concussed Range	P-value
Predictive Task
Percent Predicted (%) (n=85 vs n=26)	48.5	0 - 94.1	47.1	0 - 100	.50
First Predicted (#) (n=85 vs n=26)	4	2 - 17	5	1 - 16	.34
Horizontal Random Task
Primary Accuracy (%) (n=85 vs n=26)	91.3	81.6 - 119.6	89.2	67.0 - 108.0	.04*
Final Accuracy (%) (n=85 vs n=26)	95.3	72.3 - 120.1	94.6	72.9 - 104.5	.04*
Latency (ms) (n=85 vs n=26)	180	140 - 280	200	160 - 370	.02*
Vertical Random Task
Primary Accuracy (%) (n=85 vs n=26)	95.4	77.7 - 130.7	91.3	56.0 - 118.4	.03*
Final Accuracy (%) (n=85 vs n=26)	95.4	76.1 - 151.0	92.9	70.6 - 116.1	.04*
Latency (ms) (n=85 vs n=26)	190	150 - 310	210	170 - 470	.01*
Anti-saccadic Task
Errors (%) (n=80 vs n=25)	50.0	6.3 - 100.0	62.5	12.5 - 81.25	.20

% = Percentage (Accuracies can be >100 if participant overshot laser target stimulus)

Bolded = Statistically significant at alpha < .05

^*= One-tailed Mann-Whitney U P-value due to hypothesis that concussed individuals would perform worse