Educational inequalities in cervical cancer mortality in the Baltic Sea region in 2008–2015

Abstract Background Reducing inequalities in cervical cancer mortality is a public health priority. This study aims to assess the absolute and relative educational inequalities in cervical cancer mortality in the Baltic countries and Finland in 2008-2015. Methods Data for Estonia, Latvia and Lithuania were obtained from longitudinal mortality follow-up studies of population censuses in 2000/2001 and 2011, and data for Finland from the longitudinal register-based population data file of Statistics Finland. Cervical cancer deaths (ICD-10 code C53) were linked from national mortality registries. Educational level was census- or registry-based. Absolute and relative educational inequalities in cervical cancer mortality were assessed in 2008-2015 for women aged 30-49 and 50-64, using age-standardized mortality rates (ASMRs) per 100 000 person-years and mortality rate ratios (RRs) with 95% confidence interval (CI). Results This study included 1724 cervical cancer deaths and about 22 million person-years. Absolute and relative educational inequalities in cervical cancer mortality were considerably larger in the Baltic countries compared to Finland. Among 30-49-year-olds, ASMRs for high educated ranged from 0.6 (95% CI: 0.4-1.0) in Finland to 3.6 (95% CI: 2.5-5.0) in Lithuania, and for low educated from 2.2 (95% CI: 1.2-3.7) in Finland to 24.6 (95% CI: 18.2-32.4) in Lithuania. RRs for low educated compared to high educated ranged from 3.51 (95% CI: 1.57-7.68) in Finland to 9.11 (95% CI: 4.28-19.32) in Estonia. Among 50-64-year-olds, ASMRs for high educated ranged from 1.3 (95% CI: 0.8-2.0) in Finland to 9.8 (95% CI: 7.2-13.1) in Estonia and for low educated from 2.9 (95% CI: 1.9-4.1) in Finland to 43.9 (95% CI: 34.4-55.1) in Lithuania. RRs for low educated compared to high educated ranged from 2.18 (95% CI: 1.20-4.05) in Finland to 6.32 (95% CI: 4.30-9.36) in Lithuania. Conclusions Equitable prevention is a key to reducing cervical cancer mortality in the Baltic countries. Key messages • Lower-educated women largely drive high cervical cancer mortality in the Baltic countries. • Equity-focused prevention is crucial for reducing cervical cancer mortality in the Baltic countries.