Table 2.

Results.

Variables		Placebo (n = 24)	Standard Deviation	Botulinum Toxin (n = 24)	Standard Deviation	p Value *
QOL	4 weeks (range)	30.5 (15–42))	7.35	36 (16–48)	0.06	9.52
	6 weeks (range)	32 (14–42)	9.22	36 (11–48)	0.04	9.55
	8 weeks (range)	32 (14–42)	8.69	36 (11–49)	0.08	9.88
VAS	4 weeks (range)	6 (1–10)	2.30	3 (0–8)	0.01	2.74
	6 weeks (range)	4 (1–10)	2.63	4 (0–10)	0.09	2.82
	8 weeks (range)	4 (1–10)	2.61	3 (0–8)	0.09	2.73
ESS	4 weeks (range)	8 (1–23)	7.12	9 (1–21)	0.73	6.36
	6 weeks (range)	9 (1–22)	6.64	10 (1–22)	0.46	6.29
	8 weeks (range)	9 (1–33)	7.97	10 (1–22)	0.22	6.48

VAS—Visual Analog Scale, QOL—Johns Hopkins Quality of Life questionnaire, ESS—Epworth Sleepiness Scale. * Wilcoxon signed rank test.