5. Limitations
pain
This study included only participants from one clinical hospital center, which may affect the accuracy of the interpretation of the results. It is important to be aware that the questionnaires have biases and patients’ scores are subjective when assessing pain intensity. Although this study was prospective and randomized, and the required number of participants was obtained by statistical calculation, it would be desirable to conduct a study with larger numbers of participants and observed variables. In addition, the drugs used for ESI TF are not uniform in the literature, which could also affect the obtained results.