Table 1 Covariates included in models exploring the association between recurrent concussion and mental health outcomes

x

x

x

Sex

Male/Female

x

x

x

Race/ethnicity

Non-Hispanic White/All other race/ethnicity combinations

x

x

x

Current age

Continuous

x

x

x

Current body mass index

Continuous

x

x

x

Relationship status

Single/In a relationship

x

x

x

Education level (obtained graduate degree)

Yes/No

x

x

x

Work status (currently employed at least part time)

Yes/No

x

x

x

Disability status

Disabled/Non-disabled

x

x

x

Primary college sport played (by level of playing contact)

Collision/High contact/Low/non-contact

x

x

x

Number of years since played college sports

Continuous

x

x

x

Played professional sports

Yes/No

x

x

x

Total number of years played primary sport

Continuous

x

x

x

Career-ending injury

Yes/No

x

Additional variables

Alcohol dependence

Continuous

x

x

x

Family history of depression

Yes/No

x

Family history of anxiety

x