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Table 4 Incidence of concussion in men’s and women’s lacrosse

From: Epidemiology of sports-related concussion in seven US high school and collegiate sports

  No. (%) of concussions Injury risk (incidence proportion) per seasona Injury rate (incidence rate) per 100,000 athlete-exposures
Athlete-seasons Risk (%)a 95 %CI CLR Athlete-exposures Rate 95 %CI CLR
Men’s Lacrosse 16 (100) 1246 1.3 0.7, 1.9 1.7 70,341 22.8 11.6, 33.9 2.9
 Exposure typeb          
  Games 10 (62.5) –– –– –– –– 17,801 56.2 21.4, 91.0 4.3
  Practices 4 (25) –– –– –– –– 52,540 7.6 0.2, 15.1 99
 Setting          
  High school (n = 41) 14 (87.5) 1033 1.4 0.7, 2.1 3.2 57,054 24.5 11.7, 37.4 3.2
  College (n = 3) 2 (12.5) 213 0.9 0.3, 2.2 7.3 13,287 15.1 0.0, 35.9 ––
 Position          
  Goaltender 0 (0) 95 0.0 –– –– 5366 0.0 –– ––
  Defense 5 (31.3) 361 1.7 0.4, 3.0 8.8 20,453 29.3 5.9, 52.8 9.0
  Midfield 5 (31.3) 299 1.7 0.2, 3.1 5.0 16,986 29.4 3.6, 55.2 15.2
  Attack 6 (37.5) 471 1.1 0.1, 2.0 14.2 26,420 18.9 2.3, 35.5 15.2
Women’s Lacrosse 26 (100) 1713 1.5 0.9, 2.1 2.2 111,195 23.4 14.4, 32.4 2.3
 Exposure typeb          
  Games 22 (84.6) –– –– –– –– 26,448 83.2 48.4, 117.9 2.4
  Practices 3 (11.5) –– –– –– –– 84,747 3.5 0.0, 7.6 ---
 Setting          
  High school (n = 26) 21 (80.8) 1562 1.3 0.8, 1.9 2.5 100,098 21.0 12.0, 30.0 2.5
  College (n = 3) 5 (19.2) 151 3.3 0.5, 6.2 13.4 11,097 45.1 5.6, 84.6 15.2
 Positionc          
  Goaltender 0 (0) 103 0.0 –– –– 6737 0.0 –– ––
  Defense 7 (26.9) 407 1.7 0.5, 3.0 6.5 26,361 26.6 6.9, 46.2 6.7
  Midfield 9 (34.6) 741 1.2 0.4, 2.0 4.7 48,140 18.7 6.5, 30.9 4.8
  Attack 9 (34.6) 440 2.1 0.7, 3.4 4.7 28,539 31.5 10.9, 52.1 4.8
  1. CI confidence interval, CLR confidence limit ratio
  2. aInjury risk is the average probability that an athlete will be concussed during a season
  3. bData was missing on type of exposure (game or practice) for two concussions (13 %) for men’s lacrosse
  4. cThere was one concussion (4 %) in activities other than games and practices for women’s lacrosse; position was undefined for this injury