TABLE 2.
Correlation Matrix of Number of Concussions by Offensive Players to SoS, SRS, Attempts Statistics, Per-Drive Statistics, and Offensive and Defensive Productions During the 2012-2014 National Football League Regular Seasonsa
| Concussions/Season | SoS | SRS | Pass- Att | Rush- Att | Mean Plays/Drive | Mean Yards/Drive | Mean Time/Drive | EXP-Pass- Offense | EXP-Rush- Offense | |
|---|---|---|---|---|---|---|---|---|---|---|
| Concussions/season | 1.000 | –0.298 | –0.189 | –0.033 | 0.112 | –0.136 | –0.206 | –0.343 | –0.183 | 0.186 |
| SoS | 1.000 | 0.075 | –0.371 | –0.009 | –0.231 | –0.233 | 0.061 | –0.233 | –0.023 | |
| SRS | 1.000 | –0.059 | 0.509 | 0.601 | 0.666 | 0.520 | 0.781 | 0.316 | ||
| Pass-Att | 1.000 | –0.576 | 0.345 | 0.324 | –0.200 | 0.354 | –0.438 | |||
| Rush-Att | 1.000 | 0.188 | 0.180 | 0.229 | 0.168 | 0.549 | ||||
| Mean plays/drive | 1.000 | 0.881 | 0.669 | 0.831 | 0.309 | |||||
| Mean yards/drive | 1.000 | 0.608 | 0.933 | 0.374 | ||||||
| Mean time/drive, min | 1.000 | 0.547 | 0.328 | |||||||
| EXP-Pass-Offense | 1.000 | 0.197 | ||||||||
| EXP-Rush-Offense | 1.000 |
aOffensive players include running backs, fullbacks, quarterbacks, centers, offensive guards, offensive tackles, tight ends, and wide receivers. EXP-Pass-Offense, expected points contributed by passing offense; EXP-Rush-Offense, expected points contributed by rushing offense; Pass-Att, pass attempts per game; Rush-Att, rush attempts per game; SoS, strength of schedule; SRS, simple rating system.