Table 2.

Regression analysis of VAS score during follow-up.

ES	Coef.	Std. Err.	t	P	95% CI		Adj R2
Drug	–0.074	0.324	–0.23	0.83	–1.11	0.958	–40.92%
Trials duration	–0.37	0.73	–0.51	0.84	–2.70	1.95	–27.92%

CI, confidence interval, ES = effect size, VAS = visual analogue scale.