English: On December 7th 2017, results from the HUNT Study that included the Nord-Trøndelag county, were reported. This research began in 1997-1995 and included 63,371 people aged 20 and over with self-reported high blood pressure at baseline or blood pressure measurement. The research was completed in 2016. The graph depicts the results of the analysis of the relative risk of mortality from all causes, comparing 3 groups: a normal blood pressure group (as a basis for the calculation), an undiagnosed high blood pressure group (silent hypertension) and a diagnosed high blood pressure group. * The relative risk of death is standardized by age, sex, relative body weight, smoking status, level of education, long-term limiting disease, physical activity, blood cholesterol and creatinine levels.

The 'antennas' in the chart represent the statistical 95% confidence interval.

The graph is based on the results reported in the article [3] in Table 3 (model 2) [4] and was created using EXCEL software.