Table 4a: Study Objectives, Outcome Assessments, and Follow-Up for In-Person Group Interventions for Social Isolation.

Intervention	Study Objective	Outcome Assessment Domains*	Follow-Up (months)
1. Focus groups led by social worker or home helper	Increase social network in seniors on wait list for senior citizen apartments	Social integration, social contacts, alienation, psychological resources, health changes	6
2. Staff-led senior citizen support groups	Social activation in residents of senior citizen apartments	Mental, physical well-being, social interaction, behaviour	6
3. Peer- and professional-led exercise and education program	Increase physical activity in inactive community-dwelling seniors	General health, physical performance, health-related knowledge	12
4. Trained exercise specialist	Evaluate the impact of different modes of exercise on components of subjective well-being	Happiness, satisfaction with life, loneliness	12
5. Peer and professionalled self-help support groups	Increase self-efficacy in bereaved persons	Self-esteem, life satisfaction, competency	24
6. Social worker–led self-help support groups	Increase self-efficacy in seniors needing mental health services	Social isolation, activity, morale	12–15

^*Details of the domain assessments are outlined in Table 1 of Appendix 3.