Figure 2.

Restricted cubic spline pots of urinary sodium and blood pressure relationship from different method of evaluating the completeness of 24-h urine collection. Models were adjusted for age, sex, BMI, smoking status, physical activity, sleep, alcohol consumption, religion, and household wealth. Vertical dotted blue dotted lines indicate the 5th, 50th, and 95th percentile distribution of urine sodium excretion. mCER: measured 24-h urine creatinine excretion; pCER: predicted 24-h urine creatinine excretion.