Efficacy of Myofascial Trigger Point Dry Needling in the Prevention of Pain after Total Knee Arthroplasty: A Randomized, Double-Blinded, Placebo-Controlled Trial

Table 4

VAS > 40.

Prevalence VAS > 40	Baseline	At 1 month	P value	Variation rate
T group	80.0%	25.0%	0.003	−68.8%
	𝑛=20	𝑛=20
S group	73.7%	47.4%	0.289	−35.7%
	𝑛=19	𝑛=18

Values are percentages. Variation rate = [(percentage at 1 month − percentage at baseline)/percentage at baseline] * 100. P value obtained using the McNemar test.