Variable | Tertiles of SBP coefficient of variation | ||||

All | 1 (lowest variability) | 2 | 3 (highest variability) | P value | |

N (%) | N (%) | N (%) | N (%) | ||

All, n (row %) | 92 (100.00%) | 31 (33.70%) | 30 (32.61%) | 31 (33.70%) | |

Age, mean (SD) | 44.71 (12.16) | 45.03 (14.29) | 45.93 (12.54) | 43.19 (9.41) | 0.673 |

Female | 50 (54.35%) | 18 (58.06%) | 20 (66.67%) | 12 (38.71%) | 0.08 |

White race | 76 (82.61%) | 29 (93.55%) | 25 (83.33%) | 22 (70.97%) | 0.063 |

Within-subject SBP | |||||

Mean (mm Hg), mean (SD) | 124.05 (13.19) | 128.01 (12.98) | 118.16 (11.86) | 125.78 (13.00) | 0.008 |

SD (mm Hg), mean (SD) | 9.94 (4.59) | 5.82 (2.05) | 9.17 (1.41) | 14.79 (3.91) | <0.001 |

Maximum (mm Hg), mean (SD) | 137.95 (15.11) | 135.74 (13.70) | 132.60 (12.37) | 145.32 (16.34) | 0.002 |

Minimum (mm Hg), mean (SD) | 110.68 (14.19) | 120.45 (13.11) | 105.43 (11.24) | 106.00 (12.95) | <0.001 |

Number of measures, mean (SD) | 7.93 (5.53) | 6.29 (3.97) | 10.33 (6.18) | 7.26 (5.57) | 0.011 |

Body mass index (kg/m²), mean (SD) | 29.03 (6.02) | 28.73 (5.64) | 28.04 (5.25) | 30.28 (6.99) | 0.33 |

Depression | 19 (20.65%) | 4 (12.90%) | 11 (36.67%) | 4 (12.90%) | 0.031 |

Hypertension | 28 (30.43%) | 13 (41.94%) | 9 (30.00%) | 6 (19.35%) | 0.154 |

PDDS score, mean (SD) | 2.22 (1.89) | 1.52 (1.95) | 2.73 (1.70) | 2.42 (1.86) | 0.031 |

PDDS score, median (IQR) | 2 (0–4) | 0 (0–3) | 3 (1–4) | 2 (1–4) | |

PDDS score (3 groups) | |||||

No or mild (0–1) | 40 (43.48%) | 19 (61.29%) | 9 (30.00%) | 12 (38.71%) | 0.163 |

Moderate (2–3) | 27 (29.35%) | 6 (19.35%) | 11 (36.67%) | 10 (32.26%) | |

Severe (4 or higher) | 25 (27.17%) | 6 (19.35%) | 10 (33.33%) | 9 (29.03%) |

All percentages are either column percentages (col. %) or row percentages (row %). P-values for continuous variables were computed using one-way analysis of variance and those for categorical variables were based on Pearson χ

^{2}tests.PDDS, patient-determined disease steps; SBP, systolic blood pressure.