Table 2 Data sources available for triangulation
Evaluation of the needs of the region concerning the diabetes care delivery | -Structured questionnaire among all care providers involved in type 2 diabetes care assessing the strengths and the needs concerning diabetes care delivery in the region. Response rate: 314 questionnaires. GPs (49), specialists (5), home care (144), nurses (70), podiatrists (6), pharmacists (25), dieticians (5), eye specialists (10). Period: 2003–2004. |
Evaluation of the complex intervention | -Continuous registration of the participation rate in the different components of the intervention. |
| Â | -Semi-structured interviews among GPs who did not or only moderately participated in the program. Purposive sample of 20 GPs. Period: 2007 |
| Â | -Structured questionnaire among GPs concerning participation in the project and organization of chronic care in 2007. Response rate: 61 questionnaires. Period: 2007 |
| Â | -Structured telephonic questionnaire among pharmacists evaluating their participation in the project and the implementation of the medication record. Response: 46. Period: 2005 and 2006 |
| Â | -Document analysis of 113 meeting reports (31 study group meetings, 5 interdisciplinary group meeting, 2 meeting reports with the local quality group leaders, 37 steering group meetings and 38 research group meetings) exploring the main facilitators and barriers during the implementation process. Period: 2007 |
| Â | -Medical record audit by GPs in order to assess the quality of diabetes care. Information available from 20% of the estimated type 2 diabetes population in 2004, from 14% in 2006. |
Evaluation of the regional support structure (organization of health care) | -Semi-structured questionnaire concerning the functioning of the regional support structure among the members of the local steering group not belonging to the research team. Response rate: 4 written surveys in 2006, 8 written surveys in 2007. |
| Â | -Semi-structured questionnaire concerning the task profile of a program manager. Response: 1 questionnaire. Period: 2007. |
Evaluation of the education program (self-management support) | -Semi-structured interviews among patients who participated in the education program. Purposive sample of 22 patients. Period: 2006–2007 |
|  | -Semi-structured interviews among GPs who referred patients on a regular basis. Purposive sample of 15 GPs. Period: 2006–2007 |
| Â | -Semi-structured written questionnaire concerning the task profile of the educator: 1 questionnaire. Period: 2007. |
Evaluation of the support program for insulin initiation (delivery system design) | -Structured written questionnaire among GPs evaluating potential barriers for insulin initiation. Response rate: 37 questionnaires. Period: 2005 |
| Â | -Focus group interview with GPs who referred patients for insulin initiation. 2 focus groups with 13 GPs. Period: 2006 |
| Â | -Semi-structured interviews with patients who started insulin therapy. Purposive sample of 10 patients. Period: 2007 |
| Â | -Record analysis of patients referred for insulin initiation. 55 patient records. Period: 2007 |
Evaluation of the quality monitoring project (clinical information systems) | -Structured written questionnaire among GPs evaluating barriers for participating in the quality monitoring project. Response rate: 45 questionnaires. Period: 2005 |