Table 4: VAS > 40.

Prevalence VAS > 40BaselineAt 1 month P valueVariation rate

T group80.0%25.0%0.003−68.8%

S group73.7%47.4%0.289−35.7%

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