Table 2.

Effect evaluation in different location and type after treatment.

Group	Number	Obviously effective	Effective	No-effective	Total effective rate (%)
Control group	175	145	18	12	93.1
Location	I	75	1	2	97.4
	II	70	17	10	89.6*
Type	IM	97	2	1	99.0
	SS+SM	48	16	11	85.3*
Treatment group	251	213	22	16	93.6
Location	I	105	1	1	99.0
	II	108	21	15	89.5*
Type	IM	129	1	2	98.4
	SS+SM	84	21	14	88.2*

^*Compared with I, or IM, chi-square test, P<0.05.