Long-term Clinical and Cost Outcomes of a Pharmacist-managed Risk Factor Management Clinic in Singapore: An Observational Study

Clinical activities that contributed to the effectiveness of a cardiologist-pharmacist collaborative care model in managing diabetes

OBJECTIVES

The primary objectives of this study were to evaluate the change in glycated haemoglobin (HbA1c) and its association to clinical activities. The secondary objective was to elucidate moderators of the relationship between pharmacist-involved collaborative care (PCC) and change in HbA1c.

METHODS

This study was a retrospective cohort study conducted in a tertiary hospital over 12 months. Individuals with Type 2 diabetes, aged ≥21 years with established cardiovascular diseases were included while individuals with incomplete care documentation or missing data related to cardiovascular diseases were excluded. Individuals under the care of PCC were matched 1:1 based on baseline HbA1c with an eligible person who received care from the cardiologists (CC). Changes in mean HbA1c were analysed using linear mixed model. Linear regression was used to determine clinical activities that associated with improvement in HbA1c. Moderation analyses were conducted using the MacArthur framework.

KEY FINDINGS

A total of 420 participants (PCC:210, CC:210) were analysed. The mean age of the participants was 65.6 ± 11.1 years, with the majority being male and Chinese. The mean HbA1c among participants in the PCC group decreased significantly after 6 months (PCC: -0.4% versus CC: -0.1%, P = 0.016), with maintenance of improvement at 12 months (PCC: -0.4% versus CC: -0.2%, P < 0.001). Frequencies of lifestyle counselling, reinforcement of visits to healthcare providers, health education, resolution of drug-related problems, emphasis on medication adherence, dose adjustments and advice on self-care techniques were significantly higher in the intervention group (P < 0.001).

CONCLUSION

Improvements in HbA1c were associated with the provision of health education and medication adjustments.

The impact of pharmacist care on diabetes outcomes in primary care settings: An umbrella review of published systematic reviews

OBJECTIVE

To systematically review published systematic reviews (SRs) examining the impact of pharmacist interventions in multidisciplinary diabetes care teams on diabetes-related clinical, humanistic, and economic outcomes in primary care settings.

METHODS

PubMed, EMBASE, Scopus, Database of Abstracts of Reviews of Effects, Cochrane Library, Joanna Briggs Institute (JBI) Database, Google Scholar, and PROSPERO were searched from inception to 2018. Studies published in English evaluating the effect of pharmacist interventions on diabetes outcomes were included. Two independent reviewers were involved in screening of titles and abstracts, selection of studies, and methodological quality assessment.

RESULTS

Seven SRs were included in the study. Three of them included only randomized controlled trials, while the rest involved other study designs. Educational interventions by clinical pharmacists within the healthcare team were the most common types of interventions reported across all SRs. Pharmacist's interventions compared to usual care resulted in favorable significant improvements in hemoglobin A_1c (HbA_1c), fasting blood glucose, blood pressure, body mass index, total cholesterol, low density lipoprotein, high density lipoprotein and triglycerides in more than 50% of the SRs. Improvement in HbA_1c was the mostly reported clinical outcome of pharmacist intervention in the literature (reported in six SRs). Pharmacist's interventions led to significant cost-saving ($8-$85,000 per person per year), cost-utility, and cost-benefit (benefit-to-cost ratio range from 1:1 to 8.5:1) versus usual care. Pharmacist's interventions improved patients' quality of life (QoL) in three SRs; however, no conclusion can be drawn due to the use of diverse QoL assessment tools.

CONCLUSIONS

Most SRs support the benefit of pharmacist care on diabetes-related clinical, humanistic, and economic outcomes in primary care settings. Improvements in diabetes outcomes can significantly reduce the burden of diabetes on healthcare system. Hence, the incorporation of pharmacists into multidisciplinary diabetes care teams is beneficial and should be strongly considered by clinicians and health policymakers.