2.5. Outcome measurements
The outcomes of the study were measured after the completion of the follow-up time. The interventions of 3 groups were applied to the patients by the first author (a nurse physiotherapist). The researchers trained a college-graduated nurse to obtain the outcomes’ measurements in all groups to avoid bias. But the trained nurse was masked in allocating the patients into the study groups. The trained nurse performed the pre-and post-intervention measurements.