Background: Obesity is an important health problem worldwide. The prevalence of obesity in Aotearoa New Zealand (AoNZ) is the third highest amongst OECD countries. Previous studies have demonstrated inequity in the provision of bariatric and metabolic surgery (BMS) across AoNZ, but detailed data regarding patients and surgical outcomes is lacking. The aim of this study is to examine the rates and outcomes of BMS between patients domiciled in a metropolitan versus provincial area in AoNZ.
Methods: A 5-year retrospective observational cohort study of all patients who received BMS domiciled in a metropolitan or a provincial area in the Northern region of AoNZ was performed. Interrogation of patient electronic medical records and clinical notes was performed to collect the required baseline characteristics, secondary outcome measure data and confirm domicile.
Results: The rate of BMS was 6.1 times higher in the population with class III obesity domiciled in the metropolitan versus the provincial population. Patients in the metropolitan area were less obese, had lower rates of diabetes and had a wider range of procedures performed. Māori were underrepresented in both cohorts. There was a higher resolution of diabetes in the provincial patients.
Conclusion: This study has highlighted significant differences in the rate, type and outcomes of BMS between a metropolitan and provincial area in the Northern region of AoNZ. This represents a significant health inequity. Changes in national and regional policies are needed to ensure equitable care for patients with obesity in AoNZ.
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