Continuity of therapy associated with a respiratory treatment device may be measured. Information relating to therapy administered via the respiratory treatment device to a subject during a therapy session may be received. Based on the received information, a quantity of therapy interruption events that occurred during the therapy session may be determined. A continuity indicator may be determined based on the quantity of therapy interruption events that occurred during the therapy session. The continuity indicator is indicative of continuity of therapy associated with the respiratory treatment device during the therapy session.