S. J Paxton
Evid Based Ment Health 2007 10: 122.
The study had 80% power to detect an absolute increase in abstinence of 30% with family therapy compared with guided self-care (from 30% to 60%) at 6 months, at the 0.05 level of significance. At 12 months the dropout rate in the self-care group (43%) was higher than in the family therapy group (29%, significance not reported), therefore results at this time point should be interpreted with caution.
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