Table 1.
Basic characteristics of the hypotensive group compared with the normotensive group (2010–2013)
| Characteristic | Reference group a | Low blood pressure b |
|---|---|---|
| n = 8139 (76.0%) | n = 2569 (24.0%) | |
| Sex | ||
| Men | 3143 (86.0%) | 511 (14.0%) |
| Women | 4996 (70.8%) | 2058 (29.2%) |
| Age (mean), years | 43.5 ± 15.0 | 38.7 ± 12.9 |
| Age group | ||
| 19~ 29 | 1531 (70.0%) | 655 (30.0%) |
| 30~ 39 | 2165 (71.3%) | 870 (28.7%) |
| 40~ 49 | 1754 (75.8%) | 560 (24.2%) |
| 50~ 59 | 1375 (82.7%) | 287 (17.3%) |
| 60~ 69 | 762 (85.9%) | 125 (14.4%) |
| ≥ 70 | 552 (88.5%) | 72 (11.5%) |
| SBP, mmHg | 108.8 ± 5.4 | 94.6 ± 4.0 |
| DBP, mmHg | 70.6 ± 5.6 | 63.2 ± 5.9 |
| Mean Body Mass Index | 22.9 ± 3.2 | 21.7 ± 2.8 |
| Body Mass Index (kg/m2) | ||
| < 18.5 | 508 (65.0%) | 274 (35.0%) |
| ≥ 18.5, < 25 | 5718 (74.3%) | 1978 (25.7%) |
| ≥ 25 | 1899 (86.0%) | 310 (14.0%) |
| Hemoglobin, g/dl | 13.8 ± 1.6 | 13.2 ± 1.4 |
| Total cholesterol level, mg/ml | 186.3 ± 34.9 | 177.8 ± 32.6 |
| Household income | ||
| Low | 1958 (77.6%) | 566 (22.4%) |
| Low to intermediate | 2005 (77.0%) | 599 (23.0%) |
| Intermediate to high | 2020 (75.7%) | 650 (24.3%) |
| High | 2075 (73.8%) | 738 (26.2%) |
| Educational level | ||
| Elementary school | 1133 (86.4%) | 178 (13.6%) |
| Middle school | 695 (83.7%) | 135 (16.3%) |
| High school | 3215 (76.1%) | 1010 (23.9%) |
| College/University | 3094 (71.3%) | 1246 (28.7%) |
| Marital status | ||
| Single | 1892 (77.3%) | 556 (22.7%) |
| Married | 5771 (76.2%) | 1803 (23.8%) |
| Rejection response | 469 (69.5%) | 206 (30.5%) |
| Current smoking status | ||
| Yes | 1743 (82.7%) | 364 (17.3%) |
| No | 6395 (74.4%) | 2204 (25.6%) |
| Alcohol intake | ||
| 1 drink</month | 2812 (72.4%) | 1072 (27.6%) |
| 1~ 4 drink /month | 3026 (76.0%) | 957 (24.0%) |
| ≥ 2~ 3 drink /week | 1473 (82.8%) | 307 (17.2%) |
| Diabetes mellitus | ||
| Yes | 273 (84.5%) | 50 (15.5%) |
| No | 7866 (75.7%) | 2519 (24.3%) |
| Stroke | ||
| Yes | 7 (43.8%) | 9 (56.3%) |
| No | 8102 (76.0%) | 2560 (24.0%) |
| MI/Angina pectoris | ||
| Yes | 95 (84.1%) | 18 (15.9%) |
| No | 8044 (75.9%) | 2551 (24.1%) |
| Depression | ||
| Yes | 125 (74.4%) | 43 (25.6%) |
| No | 8014 (76.0%) | 2526 (24.0%) |
SBP Systolic Blood Pressure, DBP Diastolic Blood Pressure, MI Myocardial infarction
aReference group, Normal blood pressure, 100 ≤ SBP < 120 mmHg & DBP < 80 mmHg
bLow blood pressure, SBP < 100 mmHg