Fig. 4
From: Longitudinal impact of weight change on blood pressure in University students
The association of absolute BMI and SBP/DBP by sex. RCS models including an interaction between BMI and sex, adjusted for age, and baseline SBP or DBP, a SBP, and b DBP. Solid lines represent predicted values; shaded areas represent 95% CIs. Predictions were calculated at age 22. Vertical dashed lines at BMI 18.5 and 25.0 kg/m² represent the normal BMI range (JASSO, 2022). Results are shown separately for men (blue) and women (red). Models were fitted using R (v4.5.0) with the rms and ggplot2 packages
