Table 1.
Characteristics of Study Participants
| All (N=986) | Selected to Undergo ABPM (n=651) | ABPM Performed (n=477) | |
|---|---|---|---|
| Women, n (%) | 588 (60) | 400 (61) | 302 (63) |
| Age in years, mean (SD) | 50 (19) | 53 (18) | 54 (18)a |
| Screening BP in mm Hg, mean (SD) | |||
| Systolic | 134 (26) | 142 (28) | 139 (28)a |
| Diastolic | 81 (13) | 84 (15) | 82 (15) |
| BMI, kg/m2 (median, IQR)b | 21 (19–24) | 21 (19–24) | 21 (19–23) |
| Na excretion, mmol/24 h (median, IQR)b | 63 (47–92) | 62 (47–90) | 61 (47–80) |
| K excretion, mmol/24 h (median, IQR)b | 25 (18–38) | 25 (19–38) | 25 (19–38) |
| Spot urine albumin:creatinine ratio, mg/mg (median, IQR)b | 0.02 (0.01–0.04) | 0.02 (0.01–0.04) | 0.02 (0.01–0.04) |
| On medication for hypertension, n (%) | 22 (2) | 16 (2) | 7 (1) |
ABPM indicates ambulatory blood pressure monitoring; BMI, body mass index; BP, blood pressure; IQR, interquartile range.
a
P<0.001 comparison between all screened participants (N=986) and those who underwent ABPM (n=477).
b
BMI, Na, K, urine albumin:creatinine ratio based on 164 participants.