Table 1.

Univariable patient characteristic comparisons between patients who did and did not report pre-injury anxiety.

Variable	Pre-injury anxiety (n=43)	No pre-injury anxiety (n=241)	P value
Age (years)	14.9 [13.5–16.8]	14.9 [13.0–16.9]	0.80
Sex (female)*	16 (37%)	128 (53%)	0.07
Evaluation time (post-injury days)	6 [3–8]	5 [3–8]	0.52
Prior history of concussion?	27 (63%)	138 (58%)	0.62
History of migraine?*	8 (22%)	26 (13%)	0.20
History of ADHD?*	13 (31%)	22 (9%)	< 0.001
History of depression?*	11 (26%)	3 (1%)	< 0.001
LOC at time of injury?	4 (10%)	27 (11%)	> 0.99
Sport-related injury?	28 (82%)	194 (88%)	0.40

^*Variables that demonstrated potential between-group differences (p < 0.20) were included as covariates in multivariable models.