Information processing method and information processing system

The invention discloses an information processing method and an information processing system, which can reduce time and energy required by medical staff in judging a heart failure stage. According to one aspect of the present invention, an information processing system is provided. The information processing system is configured to execute a reading step and a determination step. The reading step reads a first electrocardiogram including an electrocardiogram of a user that has been input. In the judging step, the heart failure stage of the user is judged according to the first electrocardiogram and reference information. The reference information is information indicating a relationship between a second electrocardiogram, which is obtained in advance and includes an electrocardiogram in which a doctor determines a heart failure stage, and a characteristic quantity of the heart failure. The reference information is a learned model in which the feature quantity of the heart failure has been learned from the se