This paper presents data from a systematic review and meta-analysis of 29 published studies of therapeutic community effectiveness using controls, including 8 randomised control trials. Metaregressions suggest that the two types of therapeutic community, democratic and concept-based, and the age of the study, are the key sources of heterogeneity in the collection of studies analysed.Otherwise, heterogeneity is low and the meta-analysis confirms the effectiveness of therapeutic community treatment with overall summary log odds ratio for the 29 studies of -0.512 (95% ci -0.598 to -0.426).Keywords systematic review, meta-analysis, therapeutic communities, effectiveness, evidence
Historical antecedentsThe literature on therapeutic communities refers mainly to democratic psychiatric settings, originating in Britain during the second world war, or to concept-based houses, originating in the USA in the late 1950s. The early literature on British therapeutic communities was descriptive, usually single case studies, and penned by therapeutic community practitioners themselves, rather than impartial or rigorous evaluations (e.g. Jones 1952;Bion 1960; Foulkes 1948; Main 1946;Harrison 2000); this sort of 'practitioner research' continues today (Black 1999;Coombe 1995).The literature then moved to more sociological, anthropological studies of therapeutic communities, conducted by outsiders (e.g.Rapoport 1960). Although more impartial, these studies were not always well received by practitioners (Jones 1968), a negative reaction itself then studied by sociologists (Rapoport & Manning 1976). However, Rapoport's study of the Henderson Hospital in England became recognised as a seminal text on democratic therapeutic communities, and some of it's classifications, for example the four 'pillars' of democratisation, permissiveness, reality confrontation and communalism were regarded as criteria to be achieved 2 and standards to maintain. These criteria have been reworked recently to fit in with contemporary democratic therapeutic community practice (Haigh 1999). Subsequently, there were some comparative, again sociological, studies (Bloor, McKeganey & Fonkert 1988), but more recently there has been a growing body of evaluative research in the UK on the effectiveness of the democratic therapeutic community, particularly in mental hospitals and prisons (Chiesa & Fonagy 2000; Chiesa, Iacoponi & Morris 1996;Cullen 1994;Marshall 1997;Newton 1997;Shine 2000;Warren & Dolan 2001).In the United States, a different type of therapeutic community -the 'concept house' -emerged, with the founding of Synanon by Charles Dederich, and then Daytop Village, aimed at the treatment of drug addicts. Here again, the early literature was descriptive, but also anthropological and sociological, and mainly written by outsiders to the therapeutic community, more interested in organisational than practice issues (Yablonsky 1965;Sugarman 1974). However, the focus of therapeutic community literature in the USA changed quite quickly, from the early 1970s...