2.
纳入研究的方法学质量
Quality assessment of methodology of included studies
| Included studies | Randomization | Allocation concealment | Blinding | Lost to follow up | ITT Analysis | Baseline | Quality grading |
| ITT: intent to treat. | |||||||
| Frasci 2001[14] | Unclear | Unclear | Unclear | Yes | Yes | Similar | B |
| Gredelli 2003[15] | Stratified | Unclear | Unclear | Yes | Yes | Similar | B |
| Comella 2004[16] | Computerized | Unclear | Unclear | Yes | Yesr | Similar | B |
| Sun Q 2006[17] | Numbered | Unclear | Unclear | Yes | Unclear | Unclear | B |
| Zhang K 2006[18] | Unclear | Unclear | Unclear | Yes | Yes | Unclear | B |
| Hainsworth 2007[19] | Unclear | Unclear | Unclear | Yes | Yes | Similar | B |
| Huang C 2007[20] | Unclear | Unclear | Unclear | Yes | Unclear | Unclear | C |
| Chen 2008[21] | Unclear | Yes | Unclear | Yes | Yes | Similar | B |
| Li PY 2008[22] | Unclear | Unclear | Unclear | Yes | Unclear | Unclear | C |
| Jiang JL 2010[23] | Unclear | Unclear | Unclear | Yes | Unclear | Unclear | C |
| Lou GY 2010[24] | Numbered | Unclear | Unclear | Yes | Unclear | Similar | B |
| Quoix 2011[25] | Stratified | Unclear | Unclear | Yes | Yes | Similar | B |