Table 5.
Incidence of single, first repeat, and > 3 concussions by player position: 1996-2001 and 2002-2007.a
| Single Concussion | First of Repeat Concussions | > 3 Concussions | ||||||
|---|---|---|---|---|---|---|---|---|
| 2002-2007 | n | % | n | % | Odds Ratio | CI | n | % |
| Offense | ||||||||
| Wide receiver | 39 | 8.0 | 17 | 11.0 | 1.44 | 0.76-2.73 | 7 | 15.9 |
| Running back | 53 | 10.9 | 18 | 11.6 | 0.99 | 0.56-1.76 | 2 | 4.5 |
| Quarterback | 29 | 6.0 | 8 | 5.2 | 0.73 | 0.34-1.58 | 2 | 4.5 |
| Offensive line | 46 | 9.5 | 8 | 5.2 | 0.53 | 0.27-1.03 | 2 | 4.5 |
| Tight end | 33 | 6.8 | 13 | 8.4 | 1.31 | 0.65-2.64 | 2 | 4.5 |
| Subtotal | 200 | 41.2 | 64 | 41.3 | 0.93 | 0.64-1.34 | 15 | 34.1 |
| Defense | ||||||||
| Secondary | 95 | 19.5 | 26 | 16.8 | 0.86 | 0.54-1.36 | 11 | 25.0 |
| Defensive line | 34 | 7.0 | 11 | 7.1 | 1.04 | 0.51-2.12 | 3 | 6.8 |
| Linebacker | 49 | 10.1 | 18 | 11.6 | 1.21 | 0.67-2.19 | 6 | 13.6 |
| Subtotal | 178 | 36.6 | 55 | 35.5 | 0.99 | 0.68-1.44 | 20 | 45.5 |
| Special team | ||||||||
| Kick unit | 58 | 11.9 | 20 | 12.9 | 1.19 | 0.69-2.08 | 3 | 6.8 |
| Return unit | 32 | 6.6 | 8 | 5.2 | 0.8 | 0.38-1.70 | 3 | 6.8 |
| Carrier | 9 | 1.9 | 6 | 3.9 | 2.5 | 0.75-8.32 | 3 | 6.8 |
| Punter | 4 | 0.8 | 0 | 0.0 | 0 | 0.0 | ||
| Kicker, FGA | 3 | 0.6 | 1 | 0.6 | 1.07 | 0.11-10.77 | 0 | 0.0 |
| Kicker, PAT | 1 | 0.2 | 0 | 0.0 | 0 | 0.0 | ||
| Holder | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | ||
| Kicker, kickoff | 1 | 0.2 | 1 | 0.6 | 3.27 | 0.20-52.62 | ||
| Subtotal | 108 | 22.2 | 36 | 23.2 | 1.13 | 0.73-1.75 | 9 | 20.5 |
| Unknown | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | ||
| Total | 486 | 155 | 44 | |||||
| 1996-2001 | ||||||||
| Offense | ||||||||
| Wide receiver | 57 | 11.7 | 20 | 12.5 | 1.08 | 0.62-1.87 | 7 | 13.5 |
| Running back | 42 | 8.6 | 14 | 8.8 | 1.02 | 0.54-1.92 | 5 | 9.6 |
| Quarterback | 24 | 4.9 | 16 | 10.0 | 2.32 | 1.08-4.95 | 5 | 9.6 |
| Offensive line | 56 | 11.5 | 9 | 5.6 | 0.56 | 0.32-1.02 | 1 | 1.9 |
| Tight end | 25 | 5.1 | 9 | 5.6 | 1.24 | 0.57-2.74 | 3 | 5.8 |
| Subtotal | 204 | 41.7 | 68 | 42.5 | 1.06 | 0.73-1.52 | 21 | 40.4 |
| Defense | ||||||||
| Secondary | 80 | 16.4 | 28 | 17.5 | 1.05 | 0.65-1.70 | 9 | 17.3 |
| Defensive line | 43 | 8.8 | 16 | 10.0 | 1.15 | 0.62-2.14 | 5 | 9.6 |
| Linebacker | 33 | 6.7 | 13 | 8.1 | 1.23 | 0.61-2.46 | 5 | 9.6 |
| Subtotal | 156 | 31.9 | 57 | 35.6 | 1.16 | 0.79-1.69 | 19 | 36.5 |
| Special team | ||||||||
| Kick unit | 90 | 18.4 | 26 | 16.3 | 0.86 | 0.54-1.37 | 9 | 17.3 |
| Return unit | 18 | 3.7 | 2 | 1.3 | 0.44 | 0.16-1.24 | 1 | 1.9 |
| Carrier | 9 | 1.8 | 6 | 3.8 | 2.13 | 0.71-7.57 | 2 | 3.8 |
| Punter | 8 | 1.6 | 0 | 0.0 | 0 | 0.0 | ||
| Kicker, FGA | 1 | 0.2 | 0 | 0.0 | 0 | 0.0 | ||
| Kicker, PAT | 1 | 0.2 | 0 | 0.0 | 0 | 0.0 | ||
| Holder | 1 | 0.2 | 0 | 0.0 | 0 | 0.0 | ||
| Subtotal | 128 | 26.2 | 34 | 21.3 | 0.77 | 0.51-1.16 | 12 | 23.1 |
| Unknown | 1 | 0.2 | 1 | 0.6 | 3.07 | 0.19-49.36 | 0 | 0.0 |
| Total | 489 | 160 | 52 | |||||
a
FGA, field goal attempt; PAT, point after touchdown.