Table 1.
Baseline and follow-up characteristics of cohort by systolic blood pressure at baseline (n=1137).
| SBP at Baseline |
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|---|---|---|---|---|---|
| Characteristics | Normal (<120 mmHg) (n=705) |
Pre-hypertensive to hypertensive (≥120 mmHg) (n=432) |
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|
| |||||
| N | Mean (SD) or % | N | Mean (SD) or % | P-value | |
| Age, years | 705 | 37.4 (10.4) | 432 | 43.1 (10.7) | <0.001 |
| Male, % | 334 | 47.4 | 244 | 56.5 | 0.003 |
| Ever smoker, % | 287 | 40.7 | 208 | 48.2 | 0.02 |
| Diabetes history, % | 15 | 2.1 | 27 | 6.3 | <0.001 |
| Education, years | 705 | 3.3 (3.6) | 432 | 3.9 (4.1) | 0.009 |
| BMI baseline, kg/m2 | 702 | 19.4 (3.2) | 429 | 20.6 (3.6) | <0.001 |
|
| |||||
| Systolic Blood Pressure, mmHg | |||||
| Baseline | 705 | 105.11 (9.5) | 432 | 135.4 (16.3) | <0.001 |
| Follow up 1 | 698 | 110.5 (15.1) | 426 | 130.7 (22.2) | <0.001 |
| Follow up 2 | 665 | 114.8 (13.4) | 353 | 133.5 (20.0) | <0.001 |
| Follow up 3 | 642 | 108.9 (14.0) | 292 | 123.2 (20.3) | 0.56 |
|
| |||||
| Diastolic Blood Pressure, mmHg | |||||
| Baseline | 704 | 69.3 (8.7) | 432 | 84.5 (10.5) | 0.27 |
| Follow up 1 | 698 | 71.1 (9.2) | 426 | 81.2 (12.0) | 0.50 |
| Follow up 2 | 665 | 74.6 (9.0) | 353 | 83.5 (11.1) | 0.54 |
| Follow up 3 | 642 | 71.7 (9.6) | 292 | 79.1 (11.6) | 0.65 |
|
| |||||
| Baseline Urinary Arsenic, μg/g creatinine | 704 | 279.2 (263.6) | 425 | 268.1 (458.3) | 0.61 |
|
| |||||
| Baseline Water Arsenic, μg/L | 705 | 102.0 (115.9) | 432 | 91.9 (104.5) | 0.14 |