Table 1.

Cortical thickness analysis in active elite rugby players: demographics

Demographics	Non-acutely injured rugby players (n = 23)	Sub-acutely injured rugby players (n = 21)	Non-rugby controls (n = 47, includes 15 athletic controls)
Age, years, mean ± SD	25.4 ± 3.3	25.0 ± 3.8	24.3 ± 3.9
Male sex, n (%)	20 (87%)	21 (100%)	34 (72%)a
Career length, years, mean ± SD	6.0 ± 3.3	5.3 ± 3.8	n/a
Self-report previous concussions, n, mean ± SD	2.3 ± 2.7	3.0 ± 3.3	n/a
Time since injury, days, mean ± SD	n/a	4.7 ± 1.2	n/a
Return to play duration, days, mean ± SD	n/a	7.2 ± 1.5	n/a
Right-handed, n (%)	26 (93%)	15 (94%)	data not available

^aTwo-sample Wilcoxon rank-sum (Mann–Whitney) test, all rugby players versus controls, P < 0.05.