“…While most studies have shown that rehospitalization rates are lower for individuals who receive aftercare services compared to those who do not (Free and Dodd, 1961;Beard et al, 1963;Hornstra and McPartland, 1963;Mendel and Rappaport, 1963;Greenblatt et al, 1963;Purvis and Miskimins, 1970;Anthony and Buell, 1973;Smith et al, 1974;Winston et al, 1977), other studies show no differences between aftercare and no-aftercare groups (Brown et al, 1966;Michaux et al, 1969;Mayer et al, 1973;Franklin et al, 1975). Kirk (1976) attributes these diverse findings to differences in methodology, outcome measures, length of follow-up, type and size of patient samples, and treatment settings.…”