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Table 4 Concussion incidence rates by season and by year

From: Incidence reporting via online high school concussion surveillance by certified athletic trainers and school nurses, 2015–2018

Season/School yearNumber of concussionsConcussions/1000 enrolled HS students 95% confidence intervals
Fall 2015866.5 (5.12,7.87)
Winter 2015–201670.5 (0.14, 0.92)
Spring 2016221.7 (0.97, 2.36)
Total in 2015–2016 school year1158.7 (7.10, 10.27)
Fall 2016565.5 (4.06, 6.93)
Winter 2016–2017151.5 (0.73, 2.22)
Spring 2017222.2 (1.26, 3.06)
Total in 2016–2017 school year939.1 (7.27, 10.98)
Fall 2017765.2 (4.01, 6.34)
Winter 2017–201890.6 (0.21, 1.01)
Spring 201870.5 (0.12, 0.83)
Total in 2017–2018 school year926.3 (4.99, 7.55)