Understanding the decline of mean systolic blood pressure in Japan: an analysis of pooled data from the National Nutrition Survey, 1986–2002
Nayu Ikeda, Emmanuela Gakidou, Toshihiko Hasegawa & Christopher JL Murray
Volume 86, Number 12, December 2008, 978-988
Table 4. Age-standardized mean SBP (in mmHg) in the adult population over 20 years of age, by sex and quintiles of antihypertensive treatment coverage at the prefecture level, based on data from the National Nutrition Survey, Japan, 1986–2002
| Statistics | Coverage quintile |
||||
|---|---|---|---|---|---|
| 1st | 2nd | 3rd | 4th | 5th | |
| Mena | |||||
| n | 19 478 | 19 719 | 18 782 | 17 282 | 15 293 |
| Mean SBP | 135.0 | 134.6 | 134.5 | 134.6 | 134.8 |
| 95% CI | 134.8–135.3 | 134.4–134.9 | 134.3–134.8 | 134.3–134.9 | 134.5–135.0 |
| Womenb | |||||
| n | 22 434 | 19 143 | 20 945 | 20 442 | 18 939 |
| Mean SBP | 130.7 | 130.1 | 130.0 | 129.9 | 130.5 |
| 95% CI | 130.5–130.9 | 129.8–130.3 | 129.8–130.3 | 129.6–130.1 | 130.2–130.7 |
CI, confidence interval; SBP, systolic blood pressure.
a The coverage quintiles were, from first to fifth, 28.7–32.7%, 32.9–34.7%, 35.1–37.1%, 37.3–38.4% and 38.6–42.0%, respectively.
b The coverage quintiles were, from first to fifth, 33.1–38.9%, 39.3–40.7%, 41.0–42.5%, 42.9–44.5% and 44.8–52.7%, respectively.