Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin

Retention is important for statistical power and external validity in long-term cohort studies. The aims of our study were to evaluate different retention strategies within a cohort study of adults of Turkish descent in Berlin, Germany, and to compare participants and non-participants. In 2011-2012, a population-based study was conducted among adults of Turkish descent to primarily examine recruitment strategies. 6 years later, the participants were re-contacted and invited to complete a self-report questionnaire regarding their health status, health care utilization, and satisfaction with medical services. The retention strategy comprised letters in both German and Turkish, phone calls, and home visits (by bilingual staff). We calculated the response rate and retention rate, using definitions of the American Association for Public Opinion Research, as well as the relative retention rate for each level of contact. Associations of baseline recruitment strategy, sociodemographic, migration-related and health-related factors with retention were investigated by logistic regression analysis. Of 557 persons contacted, 249 (44.7%) completed the questionnaire. This was 50.1% of those whose contact information was available. The relative retention rate was lowest for phone calls (8.9%) and highest for home visits (18.4%). Participants were more often non-smokers and German citizens than non-participants. For all remaining factors, no association with retention was found. In this study, among adults of Turkish descent, the retention rate increased considerably with every additional level of contact. Implementation of comprehensive retention strategies provided by culturally matched study personnel may lead to higher validity and statistical power in studies on migrant health issues

Is there a survival benefit within a German primary care-based disease management program?

OBJECTIVE: To compare the mortality rate of patients with type 2 diabetes who were enrolled in the German diabetes disease management program (DMP) with the mortality rate of those who were not enrolled. STUDY DESIGN: This observational study was part of the ELSID study (Evaluation of a Large Scale Implementation of disease management programs) in Germany. METHODS: Participants had type 2 diabetes and were either enrolled or not enrolled in the DMP. The DMP provides systems-based, multifaceted, and patient-centered interventions. To reduce imbalances between the groups, a matched sample was created using sex, age, retirement status, federal state, pharmacy-based cost groups, and diagnostic-cost groups as matching criteria. Cox proportional hazards regression model and the Kaplan-Meier method were used to assess overall mortality. The observation period was 3 years beginning on January 1, 2006. RESULTS: A total of 11,079 patients were included in the analysis. As of January 1, 2006, 2300 patients were enrolled in the DMP and 8779 were receiving routine care. There were 1927 matched pairs of patients in the DMP group and the non-DMP group. The overall mortality rate was 11.3% in the DMP and 14.4% in the non-DMP group (log-rank test P <.01). CONCLUSIONS: We found an association between participation in the German diabetes DMP and reduced mortality. This reduced mortality cannot be attributed directly to the DMP. However, further research should evaluate whether a primary care-based DMP contributes to increased life expectancy in patients with diabetes

Patient perspective on task shifting from general practitioners to medical practice assistants – a quantitative survey in Germany

Abstract Introduction Various developments result in increasing workloads in general practices. New models of care and a restructuring of the division of tasks could provide relief. One approach is to extend the delegation of medical tasks from general practitioners (GPs) to medical practice assistants (MPAs). So far, there has been a lack of information about specific situations in which patients are willing to be treated exclusively by MPAs. Methods In three German federal states, patients who visited a general practice were surveyed exploratively and cross-sectionally with a self-designed, paper-based questionnaire. The data were analysed descriptively and multivariate. A mixed binary logistic regression model was calculated to account for cluster effects at practice level (random intercept model). The dependent variable was patients' acceptance of task delegation. Results A total of 1861 questionnaires from 61 general practices were included in the analysis. Regarding the current problem/request, a total of 30% of respondents could imagine being treated only by MPAs. Regarding theoretical reasons for consultation, more than half of the patients agreed to be treated by MPAs. According to the regression model, MPAs were preferred when patients were younger (10-year OR = 0.84, 95%-CI [0.75, 0.93]) or had a less complicated issue (OR = 0.44, 95%-CI [0.26, 0.8]). For four current problems/requests (“acute complaints” OR = 0.27, 95%-CI [0.17, 0.45], “routine health check” OR = 0.48, 95%-CI [0.3, 0.79], “new problem” OR = 0.13, 95%-CI [0.06, 0.28], “known problem” OR = 0.16, 95%-CI [0.1, 0.27]) patients prefer to be treated by GPs instead of MPAs. Discussion For the first time, statements could be made on patients’ acceptance of task delegation in relation to current and theoretical reasons for treatment in general practices in Germany. The discrepancy in response behaviour on a theoretical and individual level could be explained by different contexts of questions and differences at practice level. Overall, patients seem to be open to increased delegation of medical tasks, depending on the reason for treatment. Selection and response biases should be considered in the interpretation. Conclusion The results are not completely opposed to an extension of task delegation. Further interventional studies could provide information on the possible effects of expansion of delegable tasks