Trends in the management of risk of diabetes complications in different ethnic groups in New Zealand primary care

Ethnic differences in metabolic achievement between Māori, Pacific, and European New Zealanders with type 2 diabetes

AIMS

To compare variations in metabolic target achievement by ethnicity (Europeans, Māori and Pasifika) among patients with type 2 diabetes (T2DM) in Auckland, New Zealand (NZ) between 1994 and 2013.

METHODS

32,237 patients were enrolled. Adjusted marginal difference (European as reference) of systolic blood pressure (SBP), body mass index (BMI), HbA1c and total cholesterol, alongside the proportion achieving metabolic targets were estimated using multivariable mixed effect models at baseline, 1-, 2-, 3-, 4-, and 5-years, adjusted for covariates.

RESULTS

Compared with Europeans, Māori and Pasifika had continuously, significantly higher HbA1c (by 0.3% (+3.5 mmol/mol) and 0.6% (+6.8 mmol/mol) respectively and BMI (+1.5 and +0.3 kg/m² respectively) but lower SBP (-1.8 and -3.4 mmHg respectively) and TG (-0.03 and -0.34 mmol/L respectively), and insignificantly TC (+0.004 and +0.01 respectively), by 5-years of follow-up. While 49% Europeans were within target HbA1c, this was achieved by only 30% Māori and 27% Pasifika. Conversely, 41% Europeans, 46% Māori and 59% Pasifika achieved the SBP target (all P < 0.0001).

CONCLUSIONS

Managing hyperglycemia appears to be more challenging than treating hypertension and dyslipidemia among Māori and Pasifika. New anti-hyperglycemia treatments, addressing health literacy, socioeconomic and any cultural barriers to management and self-management are urgently needed to reduce these disparities.

Nurse's contribution to the diabetes annual review and funded programmes in Auckland, New Zealand

AIMS

Examine trends in nurse's contribution to diabetes funded programmes,estimate total nurse consultations, and document the division of diabetes care between doctors and nurses in general practice.

METHODS

All primary health care nurses in Auckland were identified in 2006-8 and 2016 and 26% and 24% were randomly surveyed, achieving response rates of 86%and 73%, respectively. Participants completed a self-administered and telephone questionnaire detailing their contribution to diabetes funded programmes.

RESULTS

In response to more people with diabetes, significantly more nurses in 2016 consulted patients, provided follow-up care, completed Diabetes Annual Reviews independently of doctors (48%), accessed more educational resources (including theinternet) and 63% felt supported, compared with 27% and 55% of nurses respectively,in 2006-8. The main reason nurses surveyed did not participate in diabetes reviews was because designated nurses conducted them, with more reporting this in 2016 (55%) compared to 32% in 2006-8. Most nurses in the 2016 survey addressed cardiovascular risk such as blood pressure, smoking cessation, physical activity and nutrition during the review.

CONCLUSIONS

Nurses conducted more diabetes consultations and reviews, addressed cardiovascular risk in 2016 and reported increased support for participating in diabetes reviews within general practice, compared with nurses in 2006-8.

Type 2 diabetes in Indigenous populations: quality of intervention research over 20 years

BACKGROUND

A robust evidence base is needed to reduce the disproportionately high rates of diabetes-related mortality and complications among Indigenous peoples.

OBJECTIVE

This study aimed to evaluate the quantity and methodological quality of published intervention research on Type 2 and gestational diabetes in the Indigenous populations of Australia, Canada, New Zealand, and the United States from 1989 to 2008. A robust evidence base is needed to reduce the disproportionately high rates of diabetes-related mortality and complications among Indigenous peoples.

METHODS

Systematic searches of Medline, Embase, and EBM Reviews identified publications focused on Type 2 or gestational diabetes in Indigenous peoples published between 1 January 1989 and 31 December 2008. Total publication number and proportion of research involving interventions over time were examined. The quality of intervention studies was evaluated using Cochrane's Effective Practice and Organisation of Care (EPOC) criteria.

RESULTS

Total publication number increased significantly over the 20 years (p<0.004). Research was predominantly descriptive (87%), with the proportion of research involving interventions increasing from 3% in 1989-1993 to 12% in 2003-2008 (χ(2)=12.42, df=3, p=0.006). However, only 25% (95%CI: 9-41%) of intervention studies met the EPOC methodological quality criteria; other studies lacked sufficient controls or measurements over time.

CONCLUSIONS

Increases in the amount of high-quality intervention research for prevention and treatment of Type 2 and gestational diabetes among Indigenous populations of these countries are needed.