Table 3.

Outcome measures and correlation (p-value) with gaze stabilization test (GST) head velocity in horizontal and vertical directions

	Mean (SD)	Correlation coefficient for horizontal GST	Correlation coefficient for vertical GST
ABC (n = 129)	96 (10)	0.20* (p =0.021)	0.21* (p=0.028)
DHI (n = 127)	12 (14)	−0.18* (p =0.045)	−0.22* (p=0.027)
PCSS (n = 115)	11 (13)	−0.13	−0.079
ImPACT (n = 116)
Verbal Memory %	61 (31)	0.019	−0.049
Visual Memory %	54 (32)	0.012	0.002
Visual Motor Processing	62 (31)	0.24* (p = 0.03)	0.087
Speed %
Reaction Time %	56 (30)	0.072	0.034

^*p < 0.05

Note: Spearman rank correlation coefficient used to examine relationship between GST and ABC, DHI, and PCSS; Pearson correlation coefficient used to examine relationship between GST and ImPACT percentile scores

Abbreviations: ABC, Activities-specific Balance Confidence Scale; DHI, Dizziness Handicap Inventory; PCSS, Post-Concussion Symptom Scale; ImPACT, Immediate Post-Concussion Assessment and Cognitive Test