Table 1.
Baseline Characteristics by Intervention Group in the PREMIER Trial
| Characteristic | Advice Only (n=273) |
EST (n=268) |
EST+DASH (n=269) |
All (n=810) |
|---|---|---|---|---|
| Age, mean (SD), yr | 49.5 (8.8) | 50.2 (8.6) | 50.2 (9.3) | 50.0 (8.9) |
| Female, no (%) | 172 (63.0) | 174 (64.9) | 154 (57.2) | 500 (61.7) |
| Ethnicity, no (%) | ||||
| African American | 100 (36.6) | 100 (37.3) | 79 (29.4) | 279 (34.4) |
| White | 168 (61.5) | 168 (62.7) | 184 (68.4) | 520 (64.2) |
| Other | 5 (1.8) | 0 (0) | 6 (2.2) | 11 (1.4) |
| BMI, mean (SD), kg/m2 | 32.9 (5.6) | 33.0 (5.5) | 33.3 (6.3) | 33.1 (5.8) |
| Total Cholesterol, no (%) * | ||||
| < 5.2 mmol/L | 111 (40.7) | 105 (39.6) | 106 (39.4) | 322 (39.9) |
| ≥ 5.2 mmol/L | 162 (59.3) | 160 (60.4) | 163 (60.6) | 485 (60.1) |
| Current Smoking, no (%) | 14 (5.2) | 18 (6.7) | 7 (2.6) | 39 (4.8) |
|
Systolic BP, mean (SD),
mmHg |
134.2 (10.0) | 135.5 (9.2) | 134.9 (9.4) | 134.9 (9.6) |
|
Diastolic BP, mean (SD),
mmHg |
84.8 (4.3) | 85.0 (4.1) | 84.6 (4.0) | 84.8 (4.2) |
| Education, no (%) | ||||
| ≤ high school | 21 (7.7) | 20 (7.5) | 33 (12.3) | 74 (9.1) |
| some college | 175 (64.1) | 157 (58.6) | 144 (53.5) | 476 (58.8) |
| some graduate school | 77 (28.2) | 91 (34.0) | 92 (34.2) | 260 (32.1) |
| Income, no (%) | ||||
| < $30,000 | 31 (11.4) | 26 (9.7) | 27 (10.0) | 84 (10.4) |
| $30-45,000 | 43 (15.8) | 43 (16.0) | 45 (16.7) | 131 (16.2) |
| $45-75,000 | 101 (37.0) | 87 (32.5) | 81 (30.1) | 269 (33.2) |
| > 75,000 | 89 (32.6) | 104 (38.8) | 104 (38.7) | 297 (36.7) |
| unknown | 9 (3.3) | 8 (3.0) | 12 (4.5) | 29 (3.6) |
*
n=265 for EST group and n=807 for measurement of total cholesterol.
Abbreviations: EST, established; EST+DASH, established + DASH; DASH, Dietary Approaches to Stop Hypertension; SD, standard deviation; no, number; BMI, body mass index; BP, blood pressure.