Procedure
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The Faculty of social welfare and health sciences in the University of Haifa Ethics Committee (271/14) and the Ministry of Health approved the study protocol, and all participants signed informed consent forms. An occupational therapist screened both groups two weeks before the begging of the intervention and evaluated participants in both groups before the intervention. Another occupational therapist (blinded to participants’ group membership) evaluated participants 4 weeks (after the intervention) and 12 weeks (follow-up) later. Three occupational therapists who had not performed the prior evaluations conducted the interventions. To verify the occupational therapists’ adherence to the protocol, the researcher provided them with 8 hours of study-specific training before the intervention and supervised each for 2 hours weekly during the intervention.