Table 3.
Univariate relative risk ratios for future sports related concussion
| Measure | SRC after survey |
95% CI for RR |
||||
|---|---|---|---|---|---|---|
| No | Yes | RR | Lower | Upper | p-value | |
| Prior SRC History | ||||||
| No | 114 | 8 | ||||
| Yes | 57 | 11 | 2.211 | 0.935 | 5.23 | 0.044 |
| Sporta | ||||||
| Low prevalence | 118 | 8 | ||||
| High prevalence | 53 | 11 | 2.425 | 1.027 | 5.730 | 0.038 |
| Sex | ||||||
| Female | 80 | 7 | ||||
| Male | 91 | 12 | 1.282 | 0.528 | 3.113 | 0.473 |
| NHANES Sleepiness | ||||||
| 0–1 times per month | 61 | 2 | ||||
| 2 + times per month | 110 | 17 | 2.856 | 0.681 | 11.977 | 0.037 |
| ISI | ||||||
| ISI <8 | 99 | 7 | ||||
| ISI ≥8 | 72 | 12 | 1.911 | 0.787 | 4.639 | 0.092 |
| ISI <15 | 154 | 13 | ||||
| ISI ≥15 | 17 | 6 | 3.13 | 1.32 | 7.424 | 0.015 |
| PSQI | ||||||
| PSQI <5 | 19 | 1 | ||||
| PSQI ≥5 | 152 | 18 | 1.112 | 0.157 | 7.89 | 0.699 |
| PSQI <8 | 76 | 6 | ||||
| PSQI ≥8 | 95 | 13 | 1.427 | 0.567 | 3.595 | 0.335 |
| Total sleep ≥8hrs | 44 | 7 | ||||
| Total sleep < 8hrs | 127 | 12 | 0.516 | 0.234 | 1.346 | 0.289 |
| FSS | ||||||
| FSS <36 | 129 | 14 | ||||
| FSS ≥36 | 42 | 5 | 1.021 | 0.389 | 2.685 | 1 |
Abbreviations: SRC: Sports-related concussion; RR: Relative risk ratio; mTBI: Mild traumatic brain injury; PSQI: Pittsburgh Sleep Quality Index; ISI: Insomnia Severity Scale; FSS: Fatigue Severity Scale; NHANES: National Health and Nutrition Examination Survey.
Statistically significant p-values are highlighted in bold for visibility.