Table 2.
The general data of included documents
| First Author | Publishing year | Methohodogical quality | Intervention | ||||
|---|---|---|---|---|---|---|---|
|
|
|
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| Study design | Randomized method | Allocation concalment | Double-blind | Baseline | Outcomes | ||
| Azazi [11] | 2013 | RCT | Unclear | Unclear | Yes | Similar | IL33; ST2; S; SA; MA |
| Liu [12] | 2013 | RCT | Unclear | Unclear | Yes | Similar | IL33; S; ST; SA; MDA |
| Zhang [13] | 2011 | RCT | Unclear | Unclear | No | Similar | IL33; S; SA; MDA |
| Yang [14] | 2011 | RCT | Unclear | Unclear | Yes | Similar | IL33; S; SA; MDA |
| Prefontaine [15] | 2009 | RCT | Unclear | Unclear | No | Similar | IL33; S; SA; MDA |
| Prefontaine [16] | 2010 | RCT | Unclear | Unclear | No | Similar | IL33; S; SA; MDA; MA |
| Hamzaoui [17] | 2013 | RCT | Unclear | Unclear | Yes | Similar | IL33; ST2; S; ST; MDA; MA |
| Liao [18] | 2014 | RCT | Unclear | Unclear | Yes | Similar | IL33; S; SA; MDA |
| Li [19] | 2013(a) | RCT | Unclear | Unclear | Yes | Similar | IL33; S; SA; MDA; MA |
| Ma [20] | 2011 | RCT | Unclear | Unclear | Yes | Similar | IL33; S; SA; MDA; MA |
| Gong [21] | 2002 | RCT | Unclear | Unclear | Yes | Similar | ST2; S |
| Zhang [22] | 2013 | RCT | Unclear | Unclear | Yes | Similar | IL33; S |
| Li [23] | 2013 | RCT | Unclear | Unclear | Yes | Similar | IL33; S |
| MiAeChu [24] | 2013 | RCT | Unclear | Unclear | Yes | Similar | IL33; ST2; S |
| Gluck [25] | 2012 | RCT | Unclear | Unclear | Yes | Similar | IL33; ST2; S |
S: serum; ST: sputum; SA: severe asthma; MDA: moderate asthma; MA: mild asthma.