A case matched study examining the reliability of using ImPACT to assess effects of multiple concussions

BMC Psychology

Table 2 One-way ANOVA results for ImPACT composite measures of case matched males stratified by number of previous concussions

Measure	0 Concussions	1 Concussion	2 Concussions	F[2,201]	p	Partial-eta squared
Verbal memory	82.65(1.17)	79.76 (1.21)	81.97 (1.31)	1.494	0.227	0.014
Visual memory	71.22 (1.49)	69.81 (1.78)	68.85 (1.71)	0.512	0.600	0.005
Visual motor speed	33.50 (0.86)	34.97 (0.84)	33.96 (0.92)	0.747	0.475	0.007
Reaction time	0.63 (0.01)	0.63 (0.01)	0.67 (0.02)	1.826	0.164	0.018
Impulse control	7.10 (0.63)	7.19 (0.63)	6.20 (0.51)	0.936	0.394	0.009
Total symptom score	2.78 (0.55)	3.87 (0.63)	5.97 (.994)	4.666	0.010	0.044
Mean time since last concussion (Std. Err.)	N/A	2.0 (1.7) yrs.	2.3 (2.4) yrs.	0.46^a	0.502	0.005

Mean (Std. Err.). Bolded font indicates significant differences among concussion groups (p < 0.05)
^aF[1,88]

ISSN: 2050-7283