Table 1. Sociodemographic and clinical characteristics of the cohort at baseline. The results are shown for the entire cohort and are further stratified based on the development of incident hypertension during an 8.2-year follow-up period.
| Incident hypertension | ||||
|---|---|---|---|---|
| All n = 5,915 | No n = 4,251 | Yes n = 1,664 | ||
| Age (years), mean (SD) | 48.9 (8.18) | 48.1 (7.92) | 51.1 (8.44) | |
| Women, n (%) | 3,304 (55.9%) | 2,436 (57.3%) | 868 (52.2%) | |
| Race, n (%) | ||||
| White | 3,236 (55.2%) | 2,389 (56.7%) | 847 (51.5%) | |
| Mixed | 1,597 (27.2%) | 1,149 (27.2%) | 448 (27.2%) | |
| Black | 813 (13.9%) | 527 (12.5%) | 286 (17.4%) | |
| Asian | 160 (2.73%) | 116 (2.75%) | 44 (2.67%) | |
| Indigenous | 56 (0.96%) | 36 (0.85%) | 20 (1.22%) | |
| Education level, n (%) | ||||
| Less than high school | 480 (8.11%) | 297 (6.99%) | 183 (11.0%) | |
| High school and some college | 2,051 (34.7%) | 1,431 (33.7%) | 620 (37.3%) | |
| Complete college or more | 3,384 (57.2%) | 2,523 (59.4%) | 861 (51.7%) | |
| Smoking, n (%) | ||||
| Never | 3,559 (60.2%) | 2,653 (62.4%) | 906 (54.4%) | |
| Past | 1,561 (26.4%) | 1,052 (24.7%) | 509 (30.6%) | |
| Current | 795 (13.4%) | 546 (12.8%) | 249 (15.0%) | |
| Alcohol consumption, n (%) | ||||
| Never | 564 (9.54%) | 390 (9.18%) | 174 (10.5%) | |
| Past | 1,084 (18.3%) | 756 (17.8%) | 328 (19.7%) | |
| Current | 4,265 (72.1%) | 3,104 (73.0%) | 1,161 (69.8%) | |
| Physical activity during leisure time, n (%) | ||||
| Inactive | 3,479 (59.7%) | 2,428 (58.0%) | 1,051 (64.1%) | |
| Insufficiently active | 728 (12.5%) | 523 (12.5%) | 205 (12.5%) | |
| Active | 1,618 (27.8%) | 1,234 (29.5%) | 384 (23.4%) | |
| Dyslipidemia, n (%) | 3,171 (53.6%) | 2,183 (51.4%) | 988 (59.4%) | |
| Body mass index (kg/m2), mean (SD) | 26.0 (4.23) | 25.5 (4.05) | 27.2 (4.45) | |
| Diabetes, n (%) | 546 (9.23%) | 303 (7.13%) | 243 (14.6%) | |
| TSH (mIU/L), mean (SD) | 2.00 (0.82) | 2.01 (0.82) | 1.96 (0.81) | |
| Free T3 (ng/dL), mean (SD) | 0.32 (0.04) | 0.32 (0.04) | 0.32 (0.04) | |
| Free T4 (ng/dL), mean (SD) | 1.19 (0.16) | 1.19 (0.15) | 1.18 (0.16) | |
| Anti-TPO (IU/mL), mean (SD) | 24.3 (59.0) | 25.0 (61.8) | 22.3 (51.3) | |
| FT3:FT4, mean (SD) | 0.27 (0.04) | 0.27 (0.04) | 0.27 (0.05) | |
| Systolic blood pressure (mmHg), mean (SD) | 114 (11.3) | 112 (10.6) | 121 (10.3) | |
| Diastolic blood pressure (mmHg), mean (SD) | 72.6 (8.01) | 70.9 (7.53) | 76.9 (7.61) | |
Abbreviations: anti-TPO, thyroid peroxidase antibody; SD, standard deviation.