Table 1 Patient characteristics
Characteristic | Entire group (n = 450) | (A) Ambulatory hypertension by 24-h mean ABP threshold (n = 122) | (B) Ambulatory hypertension by day-night ABP thresholds (n = 197) | P-value (A vs. B) |
|---|---|---|---|---|
Age (yr) | 13.03 ± 3.58 | 12.68 ± 3.73 | 13.27 ± 3.54 | 0.15 |
  ≥ 13 | 267 (59) | 59 (48) | 120 (61) | 0.02 |
Male sex | 267 (59) | 75 (61) | 114 (58) | 0.59 |
Overweight/obese | 248 (55) | 70 (57) | 116 (59) | 0.72 |
BMI z-score | 1.21 (0.16 to 2.00) | 1.46 (0.38 to 2.18) | 1.32 (0.31 to 2.05) | 0.50 |
Office hypertension | 57 (36) | 93 (76) | 131 (66) | 0.06 |
OBP systolic z score | 1.68 (0.33 to 2.30) | 2.28 (1.51 to 3.00) | 2.09 (1.25 to 2.78) | 0.22 |
OBP diastolic z-score | 0.60 (–0.05 to 1.41) | 1.04 (0.37 to 1.64) | 0.99 (0.33 to 1.53) | 0.62 |
Primary hypertension | 352 (78) | 109 (89) | 174 (88) | 0.78 |
Secondary hypertension | 98 (22) | 13 (11) | 23 (12) | 0.78 |
No BP medication | 322 (72) | 102 (84) | 164 (83) | 0.81 |
BP medication | 128 (28) | 20 (16) | 33 (17) | 0.81 |
ABP systolic z-score | 0.32 (–0.60 to 1.18) | 1.94 (1.27 to 2.66) | 1.29 (0.51 to 2.16) |  < 0.001 |
ABP systolic load (%) | 21.42 (7.14 to 44.44) | 60.85 (41.40 to 80.00) | 42.31 (22.47 to 65.63) |  < 0.001 |
ABP diastolic z-score | 0.13 (–0.69 to 1.18) | 1.78 (1.07 to 2.65) | 1.23 (0.40 to 2.03) |  < 0.001 |
ABP diastolic load (%) | 15.38 (6.67 to 34.20) | 41.55 (28.20 to 60.47) | 34.62 (16.95 to 51.06) |  < 0.001 |