The aim of this study is to evaluate the rehabilitation of patients based on data related to gait. In this paper, we evaluated the rehabilitation of patients undergone total knee arthroplasty (TKA), total hip arthroplasty (THA) and hemiplegic patients based on gait data such as speed, cadence, stride, and gait cycle during gait training. Statistical analysis, including repeated measures analysis of variance, is employed to examine the characteristics of changes in the data over time. Based on the results of this analysis, the importance of each data is weighted by the paired comparison method. Thereby, we evaluated the effectiveness of patient rehabilitation quantitatively and comprehensively.