Additional file 2 of Efficacy and safety of treating chronic nonspecific low back pain with radial extracorporeal shock wave therapy (rESWT), rESWT combined with celecoxib and eperisone (C + E) or C + E alone: a prospective, randomized trial

Additional file 2. Studies listed in the PEDro database in which the efficacy of non-pharmacological, conservative treatments in the management of low back pain was compared with the efficacy of pharmacological treatments and the combination thereof.