Comparison of outcomes (standardised mean difference) across studies and vote count.

+Direction of experimental pre-post SMD indicates improvement/group difference SMD favours intervention/significantly favours intervention.
− Direction of experimental pre-post SMD indicates deterioration/group difference SMD favours control/significantly favours control.
*Statistically significant (p<.05).
N sess- Number of sessions received, SMD- Standardised mean difference, Count- Vote count, nr- not reported, na- not applicable.
BPRS- Brief Psychiatric Rating Scale, Calgary- Calgary Interview Guide for Depression, COPE- Brief COPE Inventory, CORE- Clinical Outcomes in Routine Evaluation, CSQ- Client Satisfaction Questionnaire, DASS-21- Depression, Anxiety and Stress Scale, GAF- Global Assessment of Functioning Scale, HADS- Hospital Anxiety and Depression Scale, HAQ-II- Helping Alliance Questionnaire, KIRI- Knowledge of Illness and Resources Inventory, LSP- Life Skills Profile, NOSIE- Nurses' Observation Scale for Inpatient Evaluation, PANSS- Positive and Negative Symptoms Scale, PCI- Proactive Coping Inventory, RD- Researcher designed, SANS- Scale for the Assessment of Negative Symptoms, SMD- Standardised mean difference, SPG- Scales for Mental Health, SQ- Social Questionnaire, SWLS- Satisfaction with Life Scale.