Table 1 Baseline characteristics of study participants by randomized groups (n = 1612)
PR (n = 843) | NR (n = 769) | |
|---|---|---|
Cluster level | ||
Number of facilities, n | 24 | 24 |
Number of study participants per facility, median (IQR) | 30 (20,44) | 28 (23,39) |
Individual level | ||
Demographics and anthropometrics | ||
Age, years, mean ± SD | 71.6 ± 9.8 | 70.5 ± 9.2 |
Male, n (%) | 623 (73.9) | 607 (78.9) |
Study site, n (%) | ||
Changzhi | 279 (33.1) | 210 (27.3) |
Xi’an | 228 (27.1) | 267 (34.7) |
Hohhot | 184 (21.8) | 150 (19.5) |
Yangcheng | 152 (18.0) | 142 (18.5) |
Education at junior high school or above, n (%) | 270 (34.9) | 215 (29.7) |
Life style | ||
Current smokers, n (%) | 277 (32.9) | 262 (34.1) |
Current alcohol drinker, n (%) | 79 (9.4) | 77 (10.0) |
Unhealthy status | ||
Hypertension, n (%) | 522 (61.9) | 479 (62.3) |
Coronary artery disease, n (%) | 79 (9.4) | 67 (8.7) |
Stroke, n (%) | 181 (21.5) | 201 (26.1) |
Diabetes, n (%) | 84 (10.0) | 80 (10.4) |
Renal disease, n (%) | 49 (5.8) | 39 (5.1) |
Bedridden or other severe disease, n (%) | 49 (5.8) | 54 (7.0) |
Any of above | 611 (72.5) | 578 (75.2) |
Medication use | ||
Anti-HTN Med, n (%) | 337 (40.0) | 286 (37.3) |
Blood pressure and lab measures | ||
SBP, mmHg, mean ± SD | 137.1 ± 20.9 | 138.0 ± 21.8 |
DBP, mmHg, mean ± SD | 79.9 ± 11.2 | 81.2 ± 12.0 |
Serum sodium, mmol/L, mean ± SD | 142.7 ± 2.5 | 142.4 ± 2.4 |
24-h urinary sodium, mmol, mean ± SD | 164.2 ± 83.9 | 161.9 ± 81 |