Limitations
Some limitations of this study should be acknowledged. First, there was no follow-up, so it is difficult to assess the effect of PQE intervention in improving the sustained rehabilitation of PR. Second, the sample size was relatively small, which might make it difficult to achieve significant differences in partial outcomes. Third, the sample of this trial was from a single source (single-center trial) and included a small number of women, so there might be regional differences and it was not possible to determine whether there were gender differences in the effects of the intervention. Future studies should improve these deficiencies to provide more definitive results.