RF Based QIMT & QAS Study on Chinese Adults

Inclusion Criteria:

• Aged 18-79
• The blood pressure is normal: systolic blood pressure <140 mmHg, and diastolic bloodpressure <90 mmHg
• The physical examination and electrocardiogram are normal

Exclusion Criteria:

• Subjects with carotid intima-media thickness ≥ 1.0 mm should be excluded;
• Subjects with previous cardiovascular disease history and medication history should beexcluded. The main diseases include coronary heart disease, congenital heart disease,heart failure, hypertension, stroke, hyperlipidemia, diabetes, aortic arteritis, etc.;
• Subjects with past medical history and medication history of endocrine, rheumatism,chronic respiratory disease, liver and kidney disease should be excluded;
• Obese subjects (BMI ≥ 28 kg/m2), professional athletes, pregnant and lactating womenshould be excluded;
• Alcohol or drug addicts and smokers who have not quit smoking should be excluded.