1.

纳入研究的质量分析

Quality analysis of included studies

Included study	Randomized method	Allocation hidden	Blind	Lost	Quality of study
Yang L[23]	unclear	insufficient	unclear	2 cases	C
Wang JW[20]	sufficient	insufficient	clear	7 cases	B
Huang C[18]	clear	sufficient	clear	7 cases	B
Chen SJ[10]	clear	insufficient	unclear	not reported	B
Huang GS[7]	unclear	insufficient	unclear	not reported	C
Fan QL[22]	unclear	insufficient	unclear	not reported	C
Cai L[13]	unclear	insufficient	unclear	not reported	C
Xie YR[9]	clear	insufficient	unclear	not reported	B
Liu J[16]	unclear	insufficient	unclear	not reported	B
Ma JB[21]	unclear	insufficient	unclear	not reported	C
Zhang T[14]	unclear	insufficient	unclear	not reported	C
Tang Z[8]	unclear	insufficient	unclear	not reported	C
Han LC[11]	unclear	insufficient	unclear	not reported	C
Jin J[12]	unclear	insufficient	unclear	not reported	C
Liu J[15]	unclear	insufficient	unclear	not reported	C