Table 2.
| Mediators | Time Points* | Original Source |
|---|---|---|
| Medication-taking Self-efficacy | 1, 2, 3 | Perceived Competence Scale48 |
| Autonomous Motivation | 1, 2, 3 | Treatment Self-Regulation Questionnaire (TSRQ)49 |
| Medication adherence | 1, 2, 3 | Morisky Medication Adherence Measure50 |
| Assessment of level and type of support received by Peer coach | 2, 3 | Process measures used in P2P and by Robert Wood Johnson Foundation Diabetes Initiative18 |
| Self-efficacy for shared decision-making with providers | 1, 2, 3 | Self-efficacy for Decision-making scale51 |
| Medication doses and insulin starts | 1, 2, 3 | Survey items and electronic medical records |
| Moderators/Engagement Factors | ||
| Race | 1 | 2010 US Census measures |
| Preferred and actual decision-making with providers | 1 | Preferred and Actual Participation in Decision-making Scales52 |
| Attachment Style | 1 | Relationship Questionnaire53 |
| Perceived Need for DM self-management support | 1 | Support Needs Scale from Diabetes Care Profile54 |
| Perceived Benefits and Barriers to Taking DM medications | 1 | Two subscales from instrument assessing perceived barriers to and benefits from taking diabetes medications based on health beliefs model55 |
| Health Literacy | 1 | Functional Health Literacy Screener7 |
| Numeracy | 1 | Subjective Numeracy Scale (SNS)56 |
| Food insecurity | 1 | Food Security Survey Module57 |
| Neighborhood Safety, Availability of Healthy Foods, and Walking Environment | 1 | Neighborhood Safety Measure, Availability of Healthy Foods, Walking Environment58 |
*
Time point 1 is baseline, 2 is at 6 months, 3 is at 12 months.