2.1. Design
pain
A parallel group randomized controlled trial was conducted. Participants, willing to participate in this study, were included from Physiotherapy Department Services Hospital Lahore, Pakistan. Random allocation into two groups was made by a computerized generated randomization table. SNOSE method was used for the concealment of allocation. In SNOSE, an independent researcher with no clinical involvement made envelops. Except for therapist who was giving treatment, all other staff including assessors and participants were blinded to the given treatment. Subjects were not aware of treatment provided in the other arm of the study, and the persons administering the questionnaires about pain and quality of life were blinded to the results at the other time points.