1. A method comprising: monitoring at least one signal generated by a sensor as a function of at least one of activity or posture of a patient during delivery of a therapy to a patient from a medical device according to therapy parameters that change over time according to a plurality of therapy parameter sets; periodically identifying a posture of the patient based on the at least one signal; for each therapy parameter set in the plurality of therapy parameter sets, associating each of the identified postures that occurred during the delivery of the therapy to the patient according to that individual therapy parameter set with that individual therapy parameter set; and for each therapy parameter set in the plurality of therapy parameter sets, displaying for a user the postures identified during the delivery of the therapy to the patient according to that individual therapy parameter set in a manner that is indicative of efficacy of that individual therapy parameter set.