. Author manuscript; available in PMC: 2014 Sep 19.

Published in final edited form as: Cochrane Database Syst Rev. 2010 Jun 16;(6):CD007668. doi: 10.1002/14651858.CD007668.pub2

Table 4. Comparison 1: Contingency management + standard maintenance versus standard maintenance alone: attendance at counselling sessions.

Study	Outcome	Experimental group	Control group	Statistic	Notes
Neufeld 2008	Number counselling sessions attended in proportion to total number of sessions offered; by 6 months	83.2% (1285/1545)	53.4% (897/1679)	OR 4.00 (95% CI 2. 39 to 6.70; P < 0. 0001) Statistics provided by trial investigators	Favours treatment

T hese data relate to the counselling sessions attended, and not to the numbers of participants who attended.