Finally, although the group interventions in this study were of shorter duration (less than nine months), as was the follow-up period, and attrition rates were lower, these factors might influence the effectiveness of the interventions, particularly the psychoeducation group, which often becomes substantial and more prominent over a lengthy follow-up period (8). It is recommended that a longer follow-up period be used in order to understand the long-term effects of the two interventions.