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. 2020 Sep 6;13:9–14. doi: 10.1016/j.jcot.2020.09.002

Table 2.

Comparison of the Two Groups in Terms of change in VAS over time (n = 118).

VAS Group
P value for comparison of the two groups at each of the time points (t-test)
PRP
Steroid
Mean (SD) Median (IQR) Mean (SD) Median (IQR)
Pre-Injection 9.40 (0.72) 10.00 (1.00) 9.38 (0.74) 10.00 (1.00) 0.922
2 Weeks 6.71 (0.99) 6.50 (1.00) 7.30 (1.09) 7.00 (2.00) 0.003
4 Weeks 3.98 (1.03) 4.00 (1.00) 4.93 (1.07) 5.00 (2.00) <0.001
12 Weeks 1.45 (0.75) 1.00 (1.00) 2.72 (0.98) 3.00 (1.00) <0.001
24 Weeks 0.52 (0.60) 0.00 (1.00) 1.92 (1.03) 2.00 (1.00) <0.001
P Value for change in VAS over time within each group (Repeated Measures ANOVA) <0.001 <0.001
Overall P Value for comparison of change in VAS over time between the two groups (Generalized Estimating Equations Method) <0.001