A study conducted by O’Connell, Kasprow and Rosenheck is a secondary analysis of data from the evaluation of the HUD-VASH initiative that began in 1992 to provide housing for veterans with psychiatric medical. They compared the results of three kinds of interventions with 460 veterans across nineteen sites in the country.
They were assigned to three groups; one group was given a voucher and intensive case management, one group was intensive given case management only, and one group was given standard care only. Intensive case management included help locating an apartment, while standard care which consisted of short-term broker case management provided by the Health Care for Homeless Veterans outreach workers. An evaluation assistant conducted follow up interviews every three months for up to five years. Through that they found that individuals in the intensive case management group had lower scores on quality of life which was measured by the Lehman Quality of Life Interview. This is a structured questionnaire to assess the life circumstances of persons with severe and persistent mental illness.