Table 1.
Concept categories and individual concept terms developed as part of a lexicon on psychosocial concepts related to homelessness and numbers of concepts extracted from a large document corpus of 316 455 documents representing 218 note titles from the US Department of Veterans Affairs (VA) electronic medical record database
| Concept category | Examples of concepts | Raw number of concepts extracted from 316 355-document corpus (% of 58 707 total concepts) |
|---|---|---|
| Homelessness related | ||
| Direct evidence of homelessness | Sleeping in park, living on the street, living in the shelter, Domiciliary Care for Homeless Veterans, VA Supportive Housing (VASH), Healthcare for Homeless Veterans | 4860 (8.3) |
| Doubling up (at risk of homelessness) | Doubled up, couch surfing, crashing in friend's house | 69 (0.1) |
| Homelessness-related needs | Needs socks, needs sleeping bag | 6 (0) |
| Mental health | ||
| Psychiatric disorders | Severe and persistent mental illness, schizophrenia, psychosis, depression, bipolar disorder, antisocial personality disorder | 14 831 (25.3) |
| Suicide related | High risk for suicide | 102 (0.2) |
| Behavioral health related | ||
| Alcohol related | Alcohol or ethanol abuse/dependence, binge drinking, Alcoholics Anonymous groups | 8093 (13.8) |
| Substance abuse related | Substance abuse treatment program, substance abuse groups, drug rehab, detoxification | 12 552 (21.4) |
| Alcohol and substance abuse related | Alcohol/drug abuse | 3932 (6.7) |
| Social stressors | Limited social support, unemployed, divorced, separated | 6210 (10.6) |
| Legal and incarceration related | On parole, on probation, history of incarceration, legal problems, Healthcare for Re-Entry Veterans | 1225 (2.1) |
| Pathological gambling | Pathological gambling | 18 (0) |
| Utilization and non-compliance | Non-adherence, non-compliant, missed appointments, emergency medical services, EMS | 577 (1) |
| Trauma related | ||
| Military sexual trauma | Military sexual trauma, MST | 1339 (2.3) |
| Other sexual trauma | Sexual abuse, sexual trauma | 2990 (5.1) |
| Other risks | ||
| Ethnicity | Native American ethnicity | 305 (0.5) |
| Comorbidities: HIV and hepatitis C | HIV, AIDS, hepatitis C | 1598 (2.7) |