Table 1 Contents of messages

Health education phase

Dear ***, I am Dr.***. To reduce associated with hemodialysis and improve your quality of life, I would like to remind you that during the interval between your last hemodialysis session and the next, also known as the inter-dialysis period, it is crucial to keep your weight gain within a safe limit. Specifically, your weight gain should not exceed 3% of your dry weight, and ideally should not surpass 4.5% of your dry weight at most. Now, your dry weight is *kg. It is advisable to limit your interdialytic weight gain to no more than *kg and at most * kg. Weight gain beyond this limit may lead to increased blood pressure, pulmonary oedema, heart failure, and significantly increase the risk associated with your next dialysis session. Please monitor your weight regularly at home and limit your fluid intake accordingly. Together, let’s work towards maintaining a healthy weight and ensuring you feel healthy and happy every day!

Maintain phase

Dear ***, it is advisable to follow a light diet and reduce your fluid intake to manage your fluid intake effectively. Please remember to monitor your weight regularly at home. It is recommended to keep your interdialytic weight gain within *kg and ideally no more than * kg. Fighting!

Habit formation phase

Dear ***, it is advisable to adhere to a light diet and reduce fluid intake. Additionally, please ensure you complete your weight monitoring on time. It is recommended to limit your interdialytic weight gain to no more than *kg and ideally no more than * kg. You can limit your fluid intake based on your weight.