Answers to an optional survey question about the participant’s intent to update or implement a concussion protocol
| April 2016 | January 2017 | October 2017 | October 2018 | Total | |
| No of respondents | 565 (%) | 417 (%) | 256 (%) | 233 (%) | 1471 (%) |
| Yes, the participant intends to update or implement a protocol | 308 (55) | 135 (33) | 71 (28) | 65 (28) | 579 (39) |
| No, the participant does not have that intention | 257 (45) | 282 (67) | 185 (72) | 168 (72) | 892 (61) |