Skip to main content

Table 2 Pain on the NRS (0–10) scale reported daily in the patient diary after completion of 4-h ultrasound treatment. Mean ± SD

From: Effect of low-intensity long-duration ultrasound on the symptomatic relief of knee osteoarthritis: a randomized, placebo-controlled double-blind study

Primary outcome NRS data
Week Active Placebo Mean difference 95% CI p
 Baseline 5.53 (± 2.37) 5.26 (± 2.34) 0.27 (− 0.74 to 1.28) 0.59
 2 weeks 3.61 (± 2.53) 4.48 (± 2.27) − 0.87 (− 1.91 to 0.17) 0.10
 4 weeks 3.29 (± 2.58) 4.26 (± 2.42) − 0.97 (− 2.08 to 0.14) 0.08
 6 weeks 3.57 (± 2.58) 4.41 (± 2.25) − 0.84 (− 1.90 to 0.22) 0.11
NRS mean change from baseline 95% CI
 2 weeks − 1.92 ± 2.39 − 0.78 ± 2.37 − 1.14 (− 2.18 to − 0.10) 0.03
− 2.86 to − 0.98 − 1.89 to 0.32
p < 0.001 p = 0.16
 4 weeks − 2.24 ± 2.47 − 1.00 ± 2.34 − 1.24 (− 2.31 to − 0.17) 0.02
− 3.20 to 1.28 − 2.15 to 0.15
p < 0.001 p = 0.09
 6 weeks − 1.96 ± 2.50 − 0.85 ± 2.41 − 1.11 (− 2.20 to − 0.02 0.04
− 2.92 to 1.00 − 1.96 to 0.26
p < 0.001 p = 0.13