Clinical efficacy of electromagnetic field therapy combined with traditional Chinese pain-reducing paste in myofascial pain syndrome

Table 1 Basic characteristics of the patients and pretest results

Group	Sex		Age	Pretest
	Men	Women		VAS	PPI	PRI	PRI sensory	PRI affective
CG (n = 55)	15	40	52.62 ± 13.62	5 (4-7)	3 (1-3)	7 (4-11)	4 (3-7)	2 (1-4)
EG (n = 58)	16	42	50.74 ± 13.33	5 (4-7)	3 (1-3)	7 (4.75-10.25)	5.5 (3.75-8.25)	2 (1-3)
Test statistic	χ2 = 0.001		t = 0.740	Z = 0.911	Z = 0.800	Z = 0.823	Z = 1.199	Z = 0.049
P value	0.97		0.46	0.36	0.42	0.411	0.231	0.961

CG: Control group; EG: Experimental group; VAS: Visual analog scale; PPI: Present pain intensity index; PRI: Pain rating index.