An apparatus 1 comprises a subject data obtaining unit 11 for obtaining subject data M4 of an inter-organ cross talk indicator in each organ other than a specific organ, a pattern similarity calculation unit 12 for calculating, by comparing the subject data M4 with standard data 1 of the inter-organ cross talk indicator, similarity of patterns of the inter-organ cross talk indicators, and a prediction unit 13 for predicting the presence of a specific disease and/or the stage of the specific disease by using the similarity as a measure.