Fig. 2
From: Seasonal variation in nocturnal home blood pressure fall: the Nagahama study
Seasonal differences in day-to-day BP variability. The closed circle and square indicate the mean day-to-day coefficient of variation (CV) of SBP and DBP, respectively. The dotted-line indicates a quadratic regression line (evening BP: SBP, p = 0.402; DBP, p = 0.025; sleeping BP: SBP, p = 0.100; DBP, p = 0.001; morning BP: SBP, p = 0.791, DBP, p = 0.078). The day-to-day CV was calculated in individuals whose home BP was available for more than 3 days (n = 3475). The seasonal effect was assessed by a multiple linear regression analysis using the winter season as a reference. The adjusted factors in this model were age, sex, BMI, alcohol consumption, antihypertensive medication, eGFR, and BNP levels
