Cardiovascular disease risk assessment in an Aboriginal community-controlled health service: comparing algorithms

Abstract

Aboriginal and Torres Strait Islander people have high rates of cardiovascular disease (CVD). The National Vascular Disease Prevention Alliance (NVDPA) CVD risk assessment algorithm is used for all Australians. The Central Australian Rural Practitioners Association (CARPA) algorithm used in the Northern Territory adds five percentage points to all NVDPA risk scores for Indigenous Australians. Information was extracted from an Aboriginal Community-Controlled Health Service for all Aboriginal and Torres Strait Islander regular clients aged 35-74 years without known CVD (n=1057). CVD risk scores were calculated using both algorithms. Prescription of lipid-lowering medications was assessed. Clients with high-risk scores were reviewed and recalled if required. CVD risk scores were calculated for 362 (34.4%) clients. Clients with high CVD risk comprised 17.7% (NVDPA) or 23.8% (CARPA), with most determined clinically. Clients with low CVD risk comprised 73.7% (NVDPA) or 47.2% (CARPA). More than 30% of those with high risk were not on lipid-lowering medications. Significant health and social issues affected treatment uptake. It is unclear which algorithm is most applicable; however, this service has decided to continue to use the NVDPA algorithm. Use of CVD risk assessment and management of high-risk clients could be increased in primary care.