The total prevalence of diagnosed diabetes and the quality of diabetes care for the adult population in Salten, Norway

Abstract

Objective: To assess the total prevalence of types 1 and 2 diabetes and to describe and compare cardiovascular risk factors, vascular complications and the quality of diabetes care in adults with types 1 and 2 diabetes in Salten, Norway. Research design and methods: Cross-sectional study including all patients with diagnosed diabetes in primary and specialist care in Salten, 2014 (population 80,338). Differences in cardiovascular risk factors, prevalence of vascular complications and attained treatment targets between diabetes types were assessed using regression analyses. Results: We identified 3091 cases of diabetes, giving a total prevalence in all age groups of 3.8%, 3.4% and 0.45% for types 2 and 1 diabetes, respectively. In the age group 30–89 years the prevalence of type 2 diabetes was 5.3%. Among 3027 adults aged 18 years and older with diabetes, 2713 (89.6%) had type 2 and 304 (10.0%) type 1 diabetes. The treatment target for haemoglobin A1c (⩽7.0%/53 mmol/mol) was reached in 61.1% and 22.5% of types 2 and 1 diabetes patients, respectively. After adjusting for age, sex and diabetes duration we found differences between patients with types 2 and 1 diabetes in mean haemoglobin A1c (7.1% vs. 7.5%, P<0.001), blood pressure (136/78 mmHg vs. 131/74 mmHg, P<0.001) and prevalence of coronary heart disease (23.1% vs. 15.8%, P<0.001). Conclusions: The prevalence of diagnosed type 2 diabetes was slightly lower than anticipated. Glycaemic control was not satisfactory in the majority of patients with type 1 diabetes. Coronary heart disease was more prevalent in patients with type 2 diabetes.

Factors associated with treatment in primary versus specialist care: A population‐based study of people with type 2 and type 1 diabetes

“…The total prevalence of diagnosed diabetes in Salten was 3.8% in 2014, 3.4% for T2D and 0.45% for T1D. 10 As a result of a regional diabetes action plan, there has been a close cooperation between diabetes specialist care and GPs in this region during the last 20 years.…”

“…We used data from the Norwegian cross-sectional study ROSA 4 including all adults (≥18 years) with T1D and T2D living in the Salten region as at 31 December 2014. 10,11 The ROSA 4 study was approved by the Regional Ethical Committee West (REK 2014/1374, REK Vest), with practice location were positively associated with treatment in specialist care. General practitioners' use of a structured form and a diabetes nurse were negatively associated with specialist care.…”

“…The classification of diabetes type was based on the doctor's clinical diagnoses, supplemented by measurements of beta cell antibodies and C-peptide when indicated. 10 Variables regarding GPs included sex, age, medical education in Norway (yes/no), specialist status, workload defined as number of people on the list, number of individuals with T2D listed and the use of a national structured electronic diabetes form with an annual review template supplying data to the Norwegian Adult Diabetes Registry. Practice variables included location (urban/rural) and diabetes nurse employed.…”

Level of education is associated with coronary heart disease and chronic kidney disease in individuals with type 2 diabetes: a population-based study

“…12 The total prevalence of diagnosed diabetes was 3.8%, and the prevalence of type 2 diabetes was 3.4%. 13 There is a lack of studies on the associations between individual-level SES and diabetes vascular complications in a European setting, where everyone has equal access to healthcare. We therefore aimed to assess the relationship between SES as measured by education, and vascular complications in individuals with type 2 diabetes.…”

“… 12 The total prevalence of diagnosed diabetes was 3.8%, and the prevalence of type 2 diabetes was 3.4%. 13 …”