Splitting: attrition from a drug-free therapeutic community.
D006556:Heroin Dependence / Q000534:rehabilitation*; D006801:Humans; D010352:Patient Dropouts; D010414:Pennsylvania; D011998:Recreation; D012621:Seasons; D012926:Social Control, Formal; D013223:Statistics as Topic; D013696:Temperature; D013808:Therapeutic Community; D013997:Time Factors