Evaluation device, evaluation system, evaluation method, evaluation program, and storage medium

An evaluation device (4) for evaluating the severity of pneumonia in a subject patient is provided with: an acquisition means (42) for acquiring a breathing waveform of the subject patient; a calculation unit (43) that calculates a value of an index indicating instability of a respiratory cycle or a respiratory rate from the respiratory waveform; and an evaluation unit (44) that evaluates the severity on the basis of the calculated value. 一种评价对象患者的肺炎的严重程度的评价装置(4)，其包括：取得单元(42)，取得所述对象患者的呼吸波形；计算单元(43)，根据所述呼吸波形计算表示呼吸周期或呼吸频率的不稳定性的指标的值；以及评价单元(44)，基于所述计算得到的值评价所述严重程度。