ANALYSIS OF THE TIME TO RELIEVING PAIN IN PATIENTS WITH CHRONIC NON-SPECIFIC LOW BACK PAIN VIA COX PROPORTIONAL HAZARD MODEL
Keywords:Survival analysis, censored data, electrical simulation, low back pain
AbstractThe aim of this study was to evaluate the time to relieving pain intensity in patients with non-specific chronic low back pain treated by interferential current. Knowledge of the number of sessions needed for relieving pain intensity is very important because it can be used as a measure of treatment effectiveness, and assists the physiotherapist in choosing the best treatment to be used. The analysis was conducted on a sample of 150 patients with non-specific chronic low back pain, using the Cox proportional hazard model. All analysis were performed by the free software R.
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