A data output device capable of simply performing both of recognition of an entire image at an important point in time regarding medical care and recognition of a detailed change in time series data at the point in time is provided.A data display screen includes first and second display areas. In the first display area, time-series data indicating a state transition of a patient or content related to medical care performed on the patient is displayed in a graph. First indicators can be assigned to the graph. Second indicators are displayed at corresponding positions in the second display area that temporally correspond to designated positions in the first display area to which the first indicators are assigned. A second time axis in the second display area has a time scale which is longer than that of a first time axis in the first display area.
