Table 3.
Multivariable model involving both estimates of exposure simultaneously
| Years of Football Participation | Head Impact Exposure Est. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||||
| Measure | β | Zero- order Correl. | Partial Correl. | Part Correl. | p | β | Zero- order Correl. | Partial Correl. | Part Correl. | p | R2 |
| HVLT-R IR | −.047 | −.107 | −.044 | −.044 | .743 | −.166 | −.183 | −.156 | −.155 | .247 | .035 |
| HVLT DR | .004 | −.107 | .003 | .003 | .980 | −.305 | −.304 | −.286 | −.285 | .031 | .092 |
| F-A-S | .007 | −.058 | .006 | .006 | .962 | −.178 | −.176 | −.166 | −.166 | .216 | .031 |
| SDMT | −.321 | −.374 | −.310 | −.299 | .019 | −.147 | −.263 | −.148 | −.137 | .273 | .159 |
| TMT-A | .219 | .219 | .205 | .204 | .126 | −.001 | .078 | −.001 | −.001 | .996 | .048 |
| TMT-B | .482 | .423 | .450 | .450 | <.001 | −.163 | .011 | −.168 | −.152 | .211 | .202 |
| Neuro-QoL | .085 | −.029 | .086 | .081 | .530 | −.006 | −.333 | −.342 | −.342 | .010 | .118 |
| Cognition | |||||||||||
| BRIEF-A BRI | −.030 | .086 | −.030 | −.028 | .827 | .323 | .312 | .302 | .301 | .022 | .098 |
| BRIEF-A MI | .021 | .110 | .020 | .020 | .880 | .246 | .253 | .231 | .229 | .084 | .065 |
| BSI-GSI | .045 | .151 | .044 | .042 | .746 | .295 | .311 | .278 | .275 | .036 | .098 |
| BDI | .049 | .028 | −.046 | −.045 | .733 | .211 | .193 | .197 | .197 | .142 | .039 |
| BAI | .131 | .192 | .125 | .122 | .335 | .169 | .216 | .161 | .158 | .232 | .062 |
β=standardized beta estimated; partial correlation= correlation between exposure metric and outcome when controlling for the influence of the other exposure metric on both the first exposure metric and the neurobehavioral outcome; part correlation= correlation between exposure metric and outcome when controlling for the influence of the other exposure metric on only the first exposure metric and not the neurobehavioral outcome; Correl.=Correlation; p= p-value; R2= r-squared (coefficient of determination); HVLT-R= Hopkins Verbal Learning Test-Revised; IR= Immediate Recall; DR= Delayed Recall; F-A-S= Verbal Fluency, F-A-S; SDMT= Symbol Digit Modalities Test; TMT= Trail Making Test; Neuro-QoL Cognition= Quality of Life in Neurological Disorders Cognitive Functioning Short-form; BRIEF-A= Behavior Rating Inventory of Executive Function – Adult; BRI= Behavioral Regulation Index; MI= Metacognition Index; BDI= Beck Depression Inventory; BAI= Beck Anxiety Inventory; BSI-GSI= Brief Symptom Inventory-18 Global Severity Index