Home blood pressure measurement has been reported to be associated with better clinic blood pressure and daytime blood pressure control. However, no study has evaluated the association between home blood pressure measurement and control of 24-hour ambulatory blood pressure in real world practice.

The purpose of the present study is to investigate the effect of home blood pressure measurement on the control of ambulatory blood pressure in the real world.

The detailed purposes of the present study are (1) to investigate the effects of home blood pressure measurement on the appropriate control of 24-hour ambulatory blood pressure in hypertensive patients treated with antihypertensive drug, (2) to evaluate the effect of home blood pressure measurement on the occurrence of cardiovascular events and target organ damage, (3) to investigate the status and appropriateness of home blood pressure measurement in the real world, and (4) to investigate factors of home blood pressure measurement methods affecting the treatment of hypertension.

Inclusion Criteria:

• Patients with hypertension and taking antihypertensive drugs more than 1 year

Exclusion Criteria:

• Secondary hypertension
• Hypertensive emergency and urgency
• Severe heart failure (NYHA III and IV)
• Angina with 6 months
• Myocardial infarction within 6 months
• Peripheral artery disease within 6 months
• Significant arrhythmia (i.e. ventricular tachycardia and fibrillation, atrial fibrillation, atrial flutter)
• Pregnancy
• Night labor, shift worker
• Those who are currently participating in other clinical studies
• Those who have taken other clinical trial drugs within the past month
• According to the opinion of the researcher, those who have or may have a disease that may interfere with the completion of the study
• History of drug or alcohol dependence within 6 months

Patients with hypertension who were taking antihypertensive drugs for more than 1 year for treatment of hypertension are recruited through advertising in Goyang City where the hospital is located and Paju City near to the hospital.

In order to share the IPD, the informed consent from the research participants is required un the Korean law, and the investigators did not get the consent to share at the beginning of this study.