Fig. 1

Predictive odds ratios curves for the continuous association between nightthime dipping less than 10% and (A) age; (B) office systolic blood pressure; (C) 24-h mean systolic blood pressure; (D) sleep quality by proportional odds ordinal logistic regression models using maximum likelihood estimation. Reference points were 55 year, 140 mmHg, 130 mmHg, and 3 points for age, office systolic blood pressure, 24-h mean systolic blood pressure, and sleep quality, respectively