Table 1.
Characteristics (mean value±standard deviation [SD] or number and percent) of INTERMAP Study participants by country (Japan, People’s Republic of China [PRC], the United Kingdom [UK], and the United States [US]), sex, and overall
| Variable | Japan (n=1,145) |
PRC (n=839) |
UK (n=501) |
US (n=2,195) |
Men (n=2,359) |
Women (n=2,321) |
All (n=4,680) |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mean ± SD | ||||||||||||||
| Age (y) | 49.4±5.3 | 49.0±5.8 | 49.1±5.6 | 49.1±5.4 | 49.2±5.5 | 49.1±5.4 | 49.2±5.5 | |||||||
| Height (m) | 1.61±0.09 | 1.59±0.08 | 1.69±0.09 | 1.68±0.10 | 1.72±0.08 | 1.58±0.07 | 1.65±0.10 | |||||||
| Weight (kg) | 61.2±10.2 | 58.9±10.0 | 78.2±15.3 | 82.3±19.6 | 78.4±18.6 | 66.5±17.3 | 72.5±19.0 | |||||||
| Body mass index | 23.4±2.9 | 23.1±3.4 | 27.5±4.6 | 28.9±5.9 | 26.4±5.0 | 26.3±5.9 | 26.4±5.5 | |||||||
| Systolic blood pressure (mm Hg) |
117.2±13.8 | 121.3±17.4 | 120.4±14.6 | 118.6±13.9 | 120.8±13.9 | 117.0±15.3 | 118.9±14.7 | |||||||
| Diastolic blood pressure (mm Hg) |
73.6±10.3 | 73.2±10.2 | 77.3±9.9 | 73.4±9.7 | 76.2±10.0 | 71.5±9.5 | 73.8±10.0 | |||||||
| 24-h urinary sodium (mg) |
4,561±1,293 | 5,233±2,308 | 3,339±1,130 | 3,739±1,365 | 4,554±1,720 | 3,770±1,510 | 4,165±1,666 | |||||||
| 24-h dietary sodium (mg) |
4,651±1,279 | 3,990±1,943 | 3,406±1,162 | 3,660±1,343 | 4,465±1,571 | 3,394±1,211 | 3,934±1,502 | |||||||
| Hypertension (yes)a |
n
153 |
% 13.4 |
n
145 |
% 17.3 |
n
116 |
% 23.2 |
n
595 |
% 27.1 |
n
544 |
% 23.1 |
n
465 |
% 20.0 |
n
1,009 |
% 21.6 |
a
Systolic blood pressure ≥140 mm Hg, diastolic blood pressure ≥90 mm Hg, or taking medication for high blood pressure.