Systems and methods described herein relate to a sleep diagnostic system including a mattress assembly, a plurality of sensors, data acquisition circuitry, an input device, a sleep processor, and a display device. The mattress assembly may have a sleeping surface, and the plurality of sensors may be disposed within the mattress assembly below the sleeping surface. The sensors are configured to measure at least one sleep condition and output data signals indicative of the sleep condition. The sleep processor receives signals from both the sensors and one or more other input devices, and determines a sleep characteristic based upon these received signals. The display device, which includes circuitry and a graphical user interface, receives the sleep characteristic from the sleep processor and displays it to the user.