Addressing self-selection effects in evaluations of mutual help groups and professional mental health services: an introduction to two-stage sample selection models

Author: Itou T.   Iida T.   Kawatsu H.   Humphreys K.   Phibbs C.S.   Moos R.H.  

Publisher: Elsevier

ISSN: 0149-7189

Source: Evaluation and Program Planning, Vol.19, Iss.4, 1996-11, pp. : 301-308

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Abstract