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Table 1 Description of intervention content based on BCW theory

From: A behavior change wheel-based interactive pictorial health education program for hypertensive patients with low blood pressure health literacy: study protocol for a randomized controlled trial

Intervention component Intervention function Mechanisms of action (COM) Intervention time
Explain the basic health knowledge of hypertension, help patients to acquire a correct concept of hypertension Education Psy C, Ref M Week 1 of the first month
•Teach blood pressure monitoring skills, train patients to communicate with medical staff effectively Training Psy C, Phys C Week 3 of the first month
•Recognize the hypertension complications, teach and encourage to set the goal of behavior change by themselves Persuasion
Realization
Psy C, Phys C, Ref M, Auto M, Soc O, Phys O Week 1 of the second month
•Help patients understand the prevention measures of hypertension complications (medicine, diet) Incentivisation Ref M, Auto M Week 3 of the second month
•Help patients understand the prevention of hypertension complications (exercise, weight management, sleep and psychological regulation) Incentivisation Ref M, Auto M 3th months
•Review the knowledge of complications of hypertension and feedback on behavior Environment reconstructing Soc O, Phys O, Auto M 4th months
•Review the preventive measures for complications of hypertension. Group instruction for patients with different health literacy problems Environment reconstructing Soc O, Phys O, Auto M 5th months
•Review blood pressure monitoring knowledge + peer knowledge sharing Modeling Auto M 6th months
•Review blood pressure monitoring knowledge + peer knowledge sharing Modeling Auto M 7th months
•Review blood pressure monitoring knowledge + peer knowledge sharing Modeling Auto M 8th months
•Review hypertension related knowledge Education Psy C, Ref M 9th months
• Follow-up with telephone and Wechat app Education
Environment reconstructing
Psy C, Ref M, Auto M, Soc O, Phys O 10th, 11th, and 12th months