Tau pathology in the medial temporal lobe of athletes with chronic traumatic encephalopathy: a chronic effects of neurotrauma consortium study

Table 2 Symptom onset data from contact sport athletes

Stage	n	Age at symptom onset^a	Retirement to symptom onset (years)	Symptom onset to death (years)
II	11^b	36 ± 16 (17–62)	10 ± 16 (− 10–36)	12 ± 10 (1–34)
III	13	44 ± 15 (27–70)	17 ± 17 (− 6–47)	21 ± 12 (5–41)
IV	13	57 ± 14 (29–81)	29 ± 17 (2–54)	17 ± 11 (4–37)

^anumbers presented as mean ± SD (range)
^btwo CTE stage II individuals had no reported symptoms, and one CTE stage II individual had an unknown age of retirement

ISSN: 2051-5960