Analysis of numerical rating scale before and after surgery in different treatment groups

Group Before surgery Time after surgery
1 day 3 mo 6 mo 1 yr 2 yr
Comparison within groups
CRF 5.3 ± 0.7 1.8 ± 0.6 2.5 ± 1.3 2.6 ± 1.3 2.7 ± 1.2 2.6 ± 1.1
P value 0.001 0.001 0.001 0.001 0.001
DCRF 5.5 ± 1.0 2.0 ± 0.5 2.2 ± 0.8 2.1 ± 0.9 2.2 ± 1.0 2.0 ± 0.8
P value 0.001 0.001 0.001 0.001 0.001
Comparison between groups
CRF 5.3 ± 0.7 1.8 ± 0.6 2.5 ± 1.3 2.6 ± 1.3 2.7 ± 1.2 2.6 ± 1.1
DCRF 5.5 ± 1.0 2.0 ± 0.5 2.2 ± 0.8 2.1 ± 0.9 2.12 ± 1.0 2.0 ± 0.8
P value 0.401 0.522 0.254 0.024 0.041 0.050

Values are presented as mean ± standard deviation.

CRF: radiofrequency thermocoagulation, DCRF: double neddles radiofrequency thermocoagulation.

Korean J Pain 2022;35:114~123 https://doi.org/10.3344/kjp.2022.35.1.114
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