Fig. 6.

Association between urinary Na/K ratio and SBP (in the model adjusted for age, BMI, GGT, drinking status, smoking status, physical activity, education status, damage to the home during the GEJE, and residential area). p for difference was derived from Dunnett’s test using urinary Na/K ratio <3.0 as the reference. Bars represent 95% confidence intervals. p for difference is shown as follows: *p < 0.05, **p < 0.01, and ***p < 0.001. p for trend was calculated by scoring the urinary Na/K categories and entering the number as a continuous term in the regression model. BMI body mass index, GGT gamma-glutamyl transferase, GEJE Great East Japan Earthquake, Na/K ratio sodium to potassium ratio, SBP systolic blood pressure