• Yuejen Zhao, Christine Connors, Andy H Lee, and Wenbin Liang.
• Health Gains Planning Branch, Department of Health, 2nd Floor, Health House, 87 Mitchell Street, Darwin 0800, NT, Australia. Electronic address: yuejen.zhao@nt.gov.au.
• Diabetes Res. Clin. Pract. 2015 Apr 1; 108 (1): 106-12.

AimsTo determine if access to primary health care (PHC) is associated with reduced hospitalisations for remote Indigenous patients with diabetes.MethodsUsing individual level linked health clinic and hospital data, a retrospective cohort study was conducted to estimate annual hospital admission rate by number of clinic visits in the Northern Territory of Australia, stratified by age group, sex and the presence of comorbidities. A spline regression model was used to describe the clinic-hospital relationship with covariates. An impact index of PHC visits was derived using the first derivative of the quadratic equations evaluated at the parameter estimates.ResultsThe relationship between PHC visits and hospitalisations in diabetes care appeared to be a U-curve. Low levels of PHC visits were associated with increased hospital admissions amongst people with diabetes. The overall level of all-cause hospitalisations for patients with diabetes was minimised when the PHC visits were 7.9 per person-year (95% confidence interval 5.8-10).ConclusionsUsing existing empirical data, this study suggests that other things being equal, diabetes patients who had an adequate level of PHC visits are likely to have a lower level of hospitalisations than those with fewer or more PHC visits. This study highlights the importance for remote Indigenous patients with diabetes to have adequate access to PHC.Crown Copyright © 2015. Published by Elsevier Ireland Ltd. All rights reserved.

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