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Recent status of self-measured home blood pressure in the Japanese general population: a modern database on self-measured home blood pressure (MDAS)

Abstract

Despite the clinical usefulness of self-measured home blood pressure (BP), reports on the characteristics of home BP have not been sufficient and have varied due to the measurement conditions in each study. We constructed a database on self-measured home BP, which included five Japanese general populations as subdivided aggregate data that were clustered and meta-analyzed according to sex, age category, and antihypertensive drug treatment at baseline (treated and untreated). The self-measured home BPs were collected after a few minutes of rest in a sitting position: (1) the morning home BP was measured within 1 h of waking, after urination, before breakfast, and before taking antihypertensive medication (if any); and (2) the evening home BP was measured just before going to bed. The pulse rate was simultaneously measured. Eligible data from 2000 onward were obtained. The morning BP was significantly higher in treated participants than in untreated people of the same age category, and the BP difference was more marked in women. Among untreated residents, home systolic/diastolic BPs measured in the morning were higher than those measured in the evening; the differences were 5.7/5.0 mmHg in women (ranges across the cohorts, 5.3–6.8/4.7–5.4 mmHg) and 7.3/7.7 mmHg in men (ranges, 6.4–8.5/7.0–8.7 mmHg). In contrast, the home pulse rate in women and men was 2.4 (range, 1.5–3.7) and 5.6 (range, 4.6–6.6) beats per minute, respectively, higher in the evening than in the morning. We demonstrated the current status of home BP and home pulse rate in relation to sex, age, and antihypertensive treatment status in the Japanese general population. The approach by which fine-clustered aggregate statistics were collected and integrated could address practical issues raised in epidemiological research settings.

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Acknowledgements

We would like to express our deepest appreciation to all of the MDAS study collaborators for their valuable contribution. We thank the staff of Teikyo University for their valuable help.

Funding

This study was also supported by Grants-in-Aid for Scientific Research (17H04126) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

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Correspondence to Kei Asayama.

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Omron Healthcare provided research support to KA, KK, and TO. Daiichi Sankyo provided honoraria and research support to KK. The other authors declare that they have no conflict of interest.

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Asayama, K., Tabara, Y., Oishi, E. et al. Recent status of self-measured home blood pressure in the Japanese general population: a modern database on self-measured home blood pressure (MDAS). Hypertens Res 43, 1403–1412 (2020). https://doi.org/10.1038/s41440-020-0530-1

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