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Table 2 Comparison between baseline tendon thickness and its follow-up at 4 weeks, 8 weeks, 12 weeks, and 24 weeks

From: Ultrasound-guided injection of platelet-rich plasma (PRP) in rotator cuff tendinopathy: effect on patients’ symptoms and supraspinatus tendon thickness

 Tendon thickness in mmPaired t test
Mean ± SDRangeDifferenceaTest valueP valueSig.
Baseline7.26 ± 0.446.7–8.1   
4 weeks7.22 ± 0.356.7–8.10.04 ± 0.100.2760.784NS
8 weeks7.18 ± 0.436.7–8.10.02 ± 0.050.5040.618NS
12 weeks7.17 ± 0.506.7–8.10.01 ± 0.100.5230.604NS
24 weeks7.10 ± 0.306.6–7.60.07 ± 0.372.2210.043S
  1. P value > 0.05: nonsignificant; P value < 0.05: significant; P value < 0.01: highly significant
  2. aDifference was calculated from the previous reading