High Eckardt score and previous treatment were associated with poor postperoral endoscopic myotomy pain control: A retrospective study

Table 4 Simple effect analysis of variance of visual analog scale and sleep scores

		F value	P value
VAS	Risk (2 h)	8.34	0.005
	Risk (6 h)	5.71	0.019
	Risk (12 h)	12.91	< 0.001
	Risk (24 h)	1.42	0.24
	Risk (36 h)	0.69	0.41
Sleep score	Risk (day 1)	8.05	0.006
	Risk (day 2)	0.80	0.375

VAS: Visual analog scale.