Pre-intervention and post-intervention item and total scores for the Scleroderma Support Group Leader Self-efficacy Scale: possible item scores range from 1 to 6 with higher scores reflecting greater self-efficacy
| Items | Pre-trial N | Pre-trial mean (SD) | Post-trial N | Post-trial mean (SD) | Standardised mean difference effect size (95% CI—total only) |
| 1. Obtain financial or other resources needed to run the group | 10 | 3.5 (1.7) | 10 | 4.8 (1.2) | 0.61 |
| 2. Promote the group to health professionals as an important resource for patients | 10 | 4.5 (0.7) | 10 | 5.4 (0.7) | 1.80 |
| 3. Share responsibilities, including administrative and practical tasks, with a co-facilitator or other group members | 10 | 4.8 (1.6) | 10 | 5.5 (0.5) | 0.52 |
| 4. Manage group members who are overly talkative or monopolise the discussion | 10 | 3.9 (1.1) | 10 | 4.8 (0.6) | 1.13 |
| 5. Manage group members who assume the role of the ‘know-it-all’ | 10 | 3.9 (1.1) | 10 | 4.6 (0.8) | 0.73 |
| 6. Support members of the group who are grieving | 10 | 3.3 (1.5) | 10 | 4.7 (0.8) | 0.97 |
| 7. Help overly shy group members feel comfortable interacting with the group | 10 | 3.9 (1.1) | 10 | 4.9 (0.7) | 1.14 |
| 8. Help group members cope with difficult events, such as the death of a member | 10 | 3.0 (1.8) | 10 | 4.7 (0.8) | 0.90 |
| 9. Effectively recruit new members | 10 | 3.5 (1.4) | 10 | 4.9 (0.7) | 1.18 |
| 10. Address the different needs of group members at varying stages of the disease | 10 | 3.7 (1.6) | 10 | 4.8 (0.6) | 0.77 |
| 11. Manage conflicts and disagreements between group members | 10 | 3.3 (1.4) | 10 | 4.5 (0.7) | 0.95 |
| 12. Help the group establish appropriate group rules, such as maintaining confidentiality | 10 | 4.3 (1.1) | 10 | 5.8 (0.4) | 2.31 |
| 13. Effectively publicise the group | 10 | 3.5 (1.1) | 10 | 5.1 (0.7) | 1.86 |
| 14. Intervene effectively when group rules are not being followed | 10 | 4.0 (1.1) | 10 | 5.0 (0.7) | 1.30 |
| 15. Obtain the support I need to cope with the emotional demands of leading the group | 10 | 2.9 (1.2) | 10 | 4.9 (1.0) | 1.65 |
| 16. Respond constructively to feedback from group members | 10 | 4.6 (0.8) | 10 | 5.3 (0.8) | 1.01 |
| 17. Help group members relate to other members of a different age | 10 | 4.1 (1.0) | 10 | 5.1 (0.7) | 1.30 |
| 18. Provide the structure needed for successful meetings | 10 | 5 (0.9) | 10 | 5.6 (0.5) | 1.03 |
| 19. Keep the group meetings interesting and relevant to both new and returning members | 10 | 4.2 (0.9) | 10 | 5.2 (0.8) | 1.35 |
| 20. Manage group members who oversimplify or minimise the concerns of other members | 10 | 3.5 (1.4) | 10 | 4.9 (0.9) | 0.99 |
| 21. Facilitate the group meetings so that all members have an opportunity to speak | 10 | 4.6 (0.8) | 10 | 5.1 (0.9) | 0.68 |
| 22. Help the group stay focused on topics that are relevant to members | 10 | 4.4 (0.7) | 10 | 5.3 (0.7) | 1.88 |
| 23. Obtain feedback from members about the group | 10 | 4.3 (0.8) | 10 | 5.0 (0.8) | 1.04 |
| 24. Organise and plan activities for group members, such as having guest speakers | 10 | 4.5 (1.4) | 10 | 5.5 (0.7) | 0.86 |
| 25. Help members feel comfortable in the group and relate to one another | 10 | 4.4 (0.8) | 10 | 5.2 (0.6) | 1.43 |
| 26. Obtain feedback from members about my leadership | 10 | 3.6 (0.7) | 10 | 4.8 (0.9) | 1.79 |
| 27. Help group members relate to other members of a different cultural background | 10 | 3.9 (1.2) | 10 | 4.5 (1.0) | 0.50 |
| 28. Communicate reasonable boundaries about my availability outside of the group | 10 | 3.7 (1.3) | 10 | 4.5 (1.0) | 0.64 |
| 29. Talk to a group member about her or his behaviour if it is disruptive to the group | 10 | 2.7 (1.3) | 10 | 4.5 (0.9) | 1.58 |
| 30. Ask a member to leave the group due to her of his disruptive behaviour | 10 | 1.6 (1.0) | 10 | 4.2 (1.1) | 2.32 |
| 31. Help group members relate to other members of a different gender | 10 | 4.4 (1.1) | 10 | 5.0 (0.8) | 0.65 |
| 32. Recruit a co-facilitator or other group members to help me with leadership responsibilities | 10 | 4.9 (1.3) | 10 | 5.1 (0.9) | 0.16 |
| Total score (possible range 32 to 192) | 10 | 124.4 (22.0) | 10 | 159.2 (17.0) | 1.70 (0.67 to 2.72) |