Table 1.
Study characteristics
| Study | Country | Prevalence of prehypertension (%) | Sample size (% women) | Age (y), average (range or SD) | Follow-up (y) | Participants with baseline CVD excluded | Events for analysis |
|---|---|---|---|---|---|---|---|
| Wu, 2002*[7] |
China |
35.3 |
27,739 (46.3) |
47.4 (35 to 64) |
7 |
Not report |
CVD |
| Asayama, 2004 [18] |
Japan |
46 |
1,702 (61) |
60.6 (10.7) |
10.6 |
Free of stroke |
Stroke |
| Liszka, 2005 [8] |
United States |
33 |
8,986 (54.6) |
NA (≥25) |
18 |
No |
CVD, stroke, MI |
| Lee, 2006 [19] |
United States |
32.6 |
4,372 (60.6) |
56.2(45 to 74) |
12 |
Yes |
CHD |
| Qureshi, 2005 [9] |
United States |
41.1 |
5,181 (55.3) |
44.0 (8.6) |
31 |
Yes |
CAD, stroke, MI |
| Kshirsagar,2006 [20] |
United States |
37.3 |
8,960 (55) |
53(45 to 64) |
11.6 |
Yes |
CVD, CHD, stroke |
| Hsia, 2007 [21] |
United States |
39 |
60,785 (100) |
62.8 (7.0) |
7.7 |
Yes |
CVD, MI, stroke |
| Onat, 2008 [22] |
Turkey |
32.8 |
3,034 (50.4) |
48 (12) |
6.6 |
Free of DM and CHD |
CHD |
| Kokubo, 2008 [23] |
Japan |
35 |
5,494 (53) |
55 (30 to 79) |
11.7 |
Yes |
CVD, MI, stroke |
| Zhang, 2008 [24] |
United States |
32.1 |
4,507 (60) |
56 (45 to 74) |
13.4 |
Free of stroke |
Stroke |
| Gu, 2009 [25] |
China |
34.5 |
158,666 (51) |
56 (≥40) |
7.7 |
No |
CVD, CHD, stroke |
| Ikeda, 2009 [26] |
Japan |
43 |
33,372 (65) |
54 (40 to 69) |
11.0 |
Yes |
CHD, stroke |
| Ishikawa, 2010 [27] |
Japan |
32.3 |
11,000 (61.3) |
55.1 (11.5) |
10.7 |
Yes |
CVD |
| Tanaka, 2010 [28] |
Japan |
25.2 |
22,676 (66) |
62 (40 to 80) |
2.7 |
Yes |
Ischemic stroke |
| Wu, 2012 [29] |
China |
30.0 |
100,116 (20.1) |
49.4 (30 to 70) |
4 |
Yes |
CVD, stroke |
| Hadaegh, 2013 [30] |
Iran |
34.5 |
6,273(57) |
47.1 (≥30) |
9.3 |
Yes |
CVD, CHD |
| Sadeghi, 2012†[10] |
Iran |
36 |
3,255 (100) |
49.7 (≥35) |
6.7 |
Yes |
CVD, CHD, stroke |
| Fukuhara, 2012 [31] |
Japan |
37.7 |
2,634 (58) |
59.1 (≥40) |
19 |
Yes |
CVD, CHD, Stroke |
| Erbel, 2012 [11] | Germany | 26.2 | 4,181 (53) | 59.3 (40 to 75) | 7.18 | Yes | MI,stroke , revascularization |
* Article in Chinese; † Authors contacted for clarification of data.
CHD Coronary heart disease, CVD Cardiovascular disease, DM Diabetes mellitus, MI Myocardial infarction, NA indicates not available.