PROBLEM TO BE SOLVED: To provide a technology that enables accurate advance detection of urinary excretion.SOLUTION: In a detection part 100, a feature amount acquisition part 200 acquires a plurality of values of feature amounts related to the urinary excretion of a person to be detected. A pattern management part 400 combines the plurality of the values of feature amounts acquired for the person to be detected, and acquires a feature amount pattern showing the state of the person to be detected. An information storage part 500 stores actual result information in which the relationships between the past feature amount patterns and occurrences of urinary incontinence. Using the actual result information in the information storage part 500, a calculation part 600 calculates a value that shows the possibility of the urinary excretion of the person to be detected from the feature amount pattern acquired by the pattern management part 400.
