Table 1. Population Characteristics.
Continuous variables are shown in median [interquartile range] and categorical variables are in n (%).
| Characteristic | Masked hypertension (n=170) | Normal ambulatory blood pressure (n=639) |
|---|---|---|
| Age, y | 13 [10-16] | 14 [11-16] |
| Male sex | 93 (54.7%) | 368 (57.6%) |
| Race | ||
| White | 121 (71.2%) | 483 (75.6%) |
| African American | 19 (11.2%) | 49 (7.7%) |
| Others | 30 (17.6%) | 107 (16.7%) |
| Hispanic/Latino | 12 (7.1%) | 92 (14.4%) |
| Clinic systolic blood pressure, pct | 53 [34-70] | 40 [20-59] |
| Clinic diastolic blood pressure, pct | 59 [39-82] | 48 [25-68] |
| Height, pct | 27 [7-50] | 33 [13-61] |
| Weight, pct | 42 [12-78] | 51 [23-81] |
| Body mass index, pct | 51 [23-83] | 61 [32-86] |
| Low birth weight | 27 (17.1%) | 113 (18.6%) |
| Duration of CKD, y | 12 [9-15] | 12 [9-15] |
| Glomerular CKD | 33 (19.4%) | 136 (21.3%) |
| estimated GFR, mL/min/1.73 m2 | 49 [36-62] | 50 [37-64] |
| Serum sodium, mmol/L | 139 [138-141] | 139 [138-141] |
| Serum potassium, mmol/L | 4 [4-5] | 4 [4-5] |
| Total cholesterol, mg/dL | 167 [146-187] | 163 [142-187] |
| Triglycerides, mg/dL | 106 [77-158] | 101 [72-150] |
| LDL, mg/dL | 90 [73-105] | 88 [71-109] |
| Hemoglobin, pct | 22 [3-63] | 18 [1-57] |
| Left ventricular mass, pct | 42 [15-77] | 37 [14-66] |
| Medications | ||
| ACE inhibitor | 113 (66.5%) | 436 (68.2%) |
| ARB | 72 (42.4%) | 373 (58.4%) |
| Diuretics | 17 (10.0%) | 48 (7.5%) |
| Corticosteroids | 16 (9.4%) | 45 (7.0%) |
| Annual household income | ||
| ≤$36,000 | 64 (38.3%) | 182 (29.7%) |
| $36,001-75,000 | 48 (28.7%) | 185 (30.2%) |
| >$75,000 | 55 (32.9%) | 245 (40.0%) |
| Maternal education | ||
| Highschool | 59 (36.0%) | 200 (32.5%) |
| Some college | 55 (33.5%) | 173 (28.1%) |
| College and higher | 50 (30.5%) | 242 (39.3%) |
Abbreviations: Pct, percentile; CKD, chronic kidney disease; LDL, low density lipoprotein; ACE, angiotensin converting enzyme; and ARB, angiotensin II receptor blocker.