TABLE 1.
Characteristics of eligible study participants (n = 481)1
| Participants who completed at least one 24-h urine collection | ||||
|---|---|---|---|---|
| Participants who did not complete 24-h urine collection | Total | Participants who completed 2 d of collection | Participants who completed only 1 d of collection | |
| Sample size, n | 74 | 407 | 133 | 274 |
| Female, n (%) | 35 (47.3) | 221 (54.3) | 72 (54.1) | 149 (54.4) |
| Age, y | 25.8 ± 5.1 | 27.0 ± 6.0 | 28.1 ± 6.0 | 26.4 ± 5.9* |
| Race, n (%) | ||||
| Black | 44 (59.5) | 196 (48.2) | 68 (51.1) | 128 (46.7) |
| Other races | 30 (40.5) | 211 (51.8) | 65 (48.9) | 146 (53.3) |
| Self-reported hypertension diagnosis, n (%) | 2 (2.7) | 12 (3.0) | 5 (3.8) | 7 (2.6) |
| Thyroid medication users, n (%) | 0 (0.0) | 6 (1.5) | 3 (2.3) | 3 (1.1) |
| BMI, kg/m2 | N/A2 | 27.8 ± 6.6 | 27.7 ± 6.7 | 27.9 ± 6.6 |
| d 1 dietary intake | ||||
| Energy, kcal/d | N/A2 | 2544 ± 1153 | 2497 ± 1113 | 2567 ± 1173 |
| Sodium, g/d | N/A2 | 3.79 (1.53, 9.41) | 3.69 (1.45, 9.39) | 3.84 (1.56, 9.47) |
| Potassium, g/d | N/A2 | 2.65 (1.09, 6.41) | 2.71 (1.09, 6.72) | 2.62 (1.09, 6.30) |
1
Values are means ± SDs or geometric means (95% CIs) unless otherwise noted. *Different from participants with 2 d of collection in a row, P < 0.05.
2
Data were not available for participants who did not complete 24-h urine collections.