Estimated 8-year cumulative incidence of diabetes mellitus among Sami and non-Sami inhabitants of Northern Norway - The SAMINOR Study

• Published in: BMC Endocrine Disorders
• Main Authors: Ali Naseribafrouei, Bent Martin Eliassen, Marita Melhus, Johan Svartberg, Ann Ragnhild Broderstad
• Format: Article in Journal/Newspaper
• Language: English
• Published: BMC 2019
• Subjects: Cumulative incidence; Diabetes mellitus; Indigenous; Native; Norwegian; SAMINOR; Diseases of the endocrine glands. Clinical endocrinology; RC648-665; Norway; Northern Norway; sami
• Online Access: https://doi.org/10.1186/s12902-019-0399-7; https://doaj.org/article/545fc16cc24e4413a5b8c784ff554562

Abstract Background The aim of the study was to estimate and compare the 8-year cumulative incidence of diabetes mellitus (DM) among Sami and non-Sami inhabitants of rural districts in Northern Norway. Methods Longitudinal study based on linkage of two cross-sectional surveys, the SAMINOR 1 Survey (2003–2004) and the SAMINOR 2 Clinical Survey (2012–2014). Ten municipalities in rural Northern Norway were included in the study. DM-free participants aged 30 and 36–71 years in SAMINOR 1 were followed from 2 years after SAMINOR 1 to attendance in SAMINOR 2. The average follow-up time was 8.1 years. Of 5875 subjects who had participated in SAMINOR 1 and could potentially be followed to SAMINOR 2, 3303 were included in the final analysis. Self-reported DM and/or HbA1c ≥ 6.5% were used to identify incident cases of DM. Results At baseline, body mass index (BMI) and waist-to-height ratio (WHtR) were higher among Sami than among their non-Sami counterparts. After 8 years of follow-up, 201 incident cases of DM were identified (6.1% both Sami and non-Sami subjects). No statistically significant difference was observed in the cumulative incidence of DM between the Sami and non-Sami. Conclusions No statistically significant difference in the 8-year cumulative incidence of DM among Sami and non-Sami was observed, although Sami men and women had higher baseline BMI and WHtR.