Table 2.

High-yield note titles for psychosocial concepts related to homelessness based on hits using natural language processing of free text of documents from the US Department of Veterans Affairs (VA) database

Top 25 note titles based on concept hit rate	% of all documents in VA database	Total documents processed (N)	Raw number of concepts	Hit rate of concepts per N	Number of documents containing at least one concept (% of N)	Hit rate of concepts per containing documents
Homeless program	0.09	1500	2396	1.6	984 (66)	2.4
Addiction severity index note	0.02	1500	1947	1.3	1126 (75)	1.7
Military sexual trauma note	0.01	1500	1813	1.2	1174 (78)	1.5
Addiction psychiatry	0.23	1500	1410	0.9	734 (49)	1.9
Substance abuse treatment program	1.00	1500	1371	0.9	695 (46)	2.0
Psychiatry	2.64	1500	1147	0.8	616 (41)	1.9
Outreach note	0.07	1500	1111	0.7	568 (38)	2.0
Group counseling note	0.25	1500	1030	0.7	541 (36)	1.9
Crisis	0.01	1500	1029	0.7	533 (36)	1.9
Hepatology	0.04	1500	1004	0.7	604 (40)	1.7
Mental health	4.56	1500	979	0.7	573 (38)	1.7
Suicide	0.06	1500	941	0.6	599 (40)	1.6
Counseling	0.01	1499	854	0.6	481 (32)	1.8
Vocational rehabilitation	0.12	1500	853	0.6	469 (31)	1.8
Day hospitalization	0.04	1500	852	0.6	501 (33)	1.7
Certificate	0.01	1500	823	0.5	414 (28)	2.0
Domiciliary	0.36	1500	815	0.5	398 (27)	2.0
History and physical note	0.28	1500	808	0.5	455 (30)	1.8
Geriatric psychiatry	0.01	1494	798	0.5	514 (34)	1.6
Social work	1.70	1500	760	0.5	424 (28)	1.8
Traumatic brain injury note	0.01	1500	716	0.5	482 (32)	1.5
Annual evaluation note	0.02	1499	699	0.5	531 (35)	1.3
Treatment plan	0.36	1500	670	0.4	360 (24)	1.9
Conference note	0.01	1499	643	0.4	381 (25)	1.7
Neuropsychology	0.02	1500	618	0.4	402 (27)	1.5