Table 6 Results from exploratory factor analysis of the final scale (N = 215)

Capability dimension

 C3. I know what hazards high blood pressure can cause

.827

 C4. I know what causes high blood pressure

.826

 C9. I know how to control my blood pressure through exercise

.813

 C1.I can tell if my blood pressure is normal

.795

 C11.I know that I should take the medicine according to the instructions prescribed by the doctor

.792

 C8. I know how to control my blood pressure through diet

.777

 C6. I know that I should measure my blood pressure every day

.775

 C5.I know that I should go to the relevant hypertension clinic according to the doctor's advice

.745

 C7. I know how to measure my blood pressure

.744

 C2. I know what the main symptoms of hypertension are

.724

Support dimension

 S3. My family will urge me to quit smoking or limit alcohol

.907

 S1. My family will help me adjust my bad eating habits such as high salt, greasy and heavy flavors

.873

 S4. My family reminds or helps me measure my blood pressure every day

.855

 S6. The chronic disease contract mechanism established by the community (providing one-to-one door-to-door service) is convenient for me to better manage my blood pressure

.853

 S5. My family paid more attention to my blood pressure situation and gave me a lot of confidence to manage my blood pressure

.845

 S2. My family will urge me to keep exercising

.788

 S7. Medical staff will provide me with corresponding blood pressure management measures (medications, exercise, diet, etc.) according to my situation

.732

Motivation dimension

 M1. I started to manage my blood pressure because I learned that poor blood pressure control could cause serious physical and mental problems

.980

 M2. I started to manage blood pressure management based on my own health care

.935

 M4. I started managing my blood pressure because my family and friends told me the importance of blood pressure management

.921

 M3. I started to manage blood pressure through publicizing the knowledge of hypertension and the importance of blood pressure management through medical staff

.900

 M5. I started managing my blood pressure because high blood pressure increased the care burden of my family

.899

 M6. I started to manage my blood pressure because I learned that some patients with hypertension suffered from stroke, cardiovascular diseases and other diseases because they did not manage their blood pressure

.882

Behaviour dimension

 B4. I will start reducing smoking

.947

 B5. I will monitor my weight regularly and control my weight myself

.934

 B3. I will start to cut down on alcohol

.907

 B6. I will take part in physical exercise regularly (for example, 3–5 times a week, 30 min of exercise time each time)

.907

 B8. I will actively obtain knowledge about hypertension (such as consulting with medical staff, communicating with other hypertension patients, etc.)

.896

 B2. I will eat less salty foods (such as pickles, pickles, kimchi, etc.)

.871

 B9. I will take the hypertension medication according to the doctor's instructions

.839

 B7. I will think about the positives when I get into negative situations or have unhappy thoughts

.806

 B1. I will monitor my own blood pressure daily

.793

 B10. I will adjust the time, amount and content of my work (housework) according to my blood pressure

.639