Survey items for measuring primary outcomes
| Outcome | Item wording | Response scale |
| Skills and confidence | I can communicate convincingly, yet diplomatically in board meetings. | 1=Strongly disagree to 6=Strongly agree |
| Skills and confidence | I am confident in my ability to get the information I need in board meetings | 1=Strongly disagree to 6=Strongly agree |
| Skills and confidence | I respond to information I have received in board meetings in a timely manner | 1=Strongly disagree to 6=Strongly agree |
| Skills and confidence | I am confident in requesting information during board meetings | 1=Strongly disagree to 6=Strongly agree |
| Skills and confidence | If information is not provided after being requested in a board meeting, I know what to do | 1=Strongly disagree to 6=Strongly agree |
| Skills and confidence | I am very confident in raising difficult issues during board meetings | 1=Strongly disagree to 6=Strongly agree |
| Skills and confidence | Even when other board members disagree with me, it is easy to express my opinions | 1=Strongly disagree to 6=Strongly agree |
| Board meeting processes | Board meetings are conducted in a manner that encourages open communication and meaningful participation from all board directors. | 1=Strongly disagree to 6=Strongly agree |
| Board meeting processes | Sufficient time is provided during board meetings for thoughtful discussion and interrogating issues. | 1=Strongly disagree to 6=Strongly agree |
| Board meeting processes | There is adequate time in board meetings to address all agenda items thoroughly | 1=Strongly disagree to 6=Strongly agree |
| Board meeting processes | All directors ask questions during board meetings | 1=Strongly disagree to 6=Strongly agree |
| Board meeting processes | All directors make robust contributions to discussions | 1=Strongly disagree to 6=Strongly agree |
| Board meeting processes | All directors are able to disagree without being disagreeable | 1=Strongly disagree to 6=Strongly agree |
| Board meeting processes | All directors display respect for each other | 1=Strongly disagree to 6=Strongly agree |
| Board meeting processes | There is a culture of openness at our board meetings | 1=Strongly disagree to 6=Strongly agree |