Based on receipt data indicating a detailed statement of medical fees, receipt data conversion information indicating a presence or absence of a medical care information item that corresponds to a plurality of examination failure conditions is generated. A failure risk level based on the medical care information item included in the receipt data is calculated by using the receipt data conversion information and an examination failure risk predictor. A risk factor indicating a medical care information item with a degree of contribution to the failure risk level calculation that is greater than or equal to a prescribed threshold value for degree of contribution is specified. A revision screen for the medical care information item that is a risk factor when the failure risk level is greater than or equal to a prescribed threshold value for risk level is output.