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; periodically identifying a posture of the patient based on the signal; associating each of the identified postures with a therapy parameter set that was used by a medical device to deliver a therapy to the patient when the posture was identified; and displaying for a user the therapy parameter sets associated with the postures identified during their use in a manner that is indicative of efficacy of the therapy parameter sets.