Table 1.
Baseline characteristics in the no salt restriction and salt restriction groups
| Total (n = 1562) | Non-salt restriction (n = 715) | Salt restriction (n = 847) | P value* | |
|---|---|---|---|---|
| Age, years, mean ± SD | 58.0 ± 17.3 | 51.0 ± 16.6 | 64.2 ± 15.5 | <0.001 |
| Age (<65 years) | 935 (59.9) | 555 (77.6) | 380 (44.9) | <0.001 |
| Women, n (%) | 977 (62.5) | 397 (55.5) | 580 (68.5) | <0.001 |
| Graduation from college or university | 405 (26.2) | 223 (31.2) | 182 (21.5) | <0.001 |
| Family history of hypertension | 598 (38.4) | 254 (35.5) | 345 (40.7) | 0.04 |
| Hypertension | 543 (34.8) | 150 (21.0) | 393 (46.4) | <0.001 |
| Cardiovascular or cerebrovascular disease | 64 (4.1) | 20 (2.8) | 44 (5.2) | 0.02 |
| Anxiety about hypertension | 859 (55.4) | 343 (48.0) | 516 (60.9) | <0.001 |
| Salt preference | 945 (60.1) | 566 (79.2) | 379 (44.7) | <0.001 |
| Desire to undergo genetic testing | 770 (49.9) | 340 (47.6) | 430 (50.8) | 0.21 |
Notes: n (%) except age.
*
No salt restriction group versus salt restriction group, unpaired t-test; age, and Chi-square test; the other items.
Abbreviation: SD, standard deviation.