| Author, year | Random method | Sample size (I/C) | Male (I/C) | Age (years) (I/C) | Intervention | Control | Outcomes | Indications |
| Fang and Wang, 2013 [26] | Random number table | 40/36 | 22/19 | | Xuebijing 100 mL iv q12h for 7 days | Conventional treatment | Mortality, ICU stay, IL-6, TNF-α, | ARDS | Liu et al., 2012 | Random number table | 91/81 | 68/57 | 55/53 | Xuebijing 100 mL iv q12h for 7 days | Conventional treatment | Mortality, ICU stay | ARDS | Song et al., 2019 [27] | Random number | 334/341 | 224/234 | | Xuebijing 100 mL iv q12h for 7 days | Placebo (saline 100 mL) | Mortality, ICU stay | SP | Chu, 2017 [28] | Draw lots | 43/43 | 25/26 | | Xuebijing 100 mL iv q12h for 7 days | Low molecular weight heparin 5 U/kg/h) | Mortality, ICU stay, IL-6, TNF-α | ARDS | Gao et al., 2014 [29] | Random number | 63/63 | 34/36 | | Xuebijing 100 mL iv bid for 7 days | Conventional treatment | ICU stay, IL-6, TNF-α | SP | Huang et al., 2008 [30] | Random number | 36/36 | 20/22 | | Xuebijing 50 mL iv bid for 7 days | Conventional treatment | Mortality, IL-6, TNF-α | ARDS | Tian and Sun, 2012 [31] | Draw lots | 50/50 | 57 | | Xuebijing 50 mL iv q12h for 7 days | Conventional treatment | Mortality, ICU stay, IL-6, TNF-α | ARDS | Liu et al., 2016 [32] | Random number table | 30/30 | 17/16 | | Xuebijing 50 mL iv bid for 7 days | Conventional treatment | ICU stay, IL-6, TNF-α | ARDS | Wang, 2017 [33] | Random number table | 48/48 | 26/25 | | Xuebijing 50 mL iv bid for 7 days | Conventional treatment | ICU stay, TNF-α | ARDS | Wang, 2019 [34] | NR | 50/50 | 33/32 | | Xuebijing 50 mL iv bid for 7 days | Conventional treatment | Mortality, ICU stay, IL-6, TNF-α | ARDS | Chen et al., 2010 [35] | Random number table | 31/30 | 14/16 | | Xuebijing 100 mL iv bid for 7 days | Conventional treatment | Mortality, ICU stay, IL-6 | ARDS | Xu et al., 2014 [36] | NR | 28/28 | 19/17 | | Xuebijing 50 mL iv bid for 7 days | Conventional treatment | ICU stay, IL-6, TNF-α | ARDS | Zhao et al., 2010 [37] | NR | 20/20 | 24 | | Xuebijing 50 mL iv bid for 7 days | Conventional treatment | Mortality, ICU stay, IL-6, TNF-α | ARDS | Chen and Li, 2011 [38] | Random number table | 30/30 | 33 | | Xuebijing 100 mL iv qd for 7 days | Conventional treatment | Mortality, IL-6, TNF-α | ARDS | Wang et al., 2011 [39] | NR | 20/24 | 12/12 | | Xuebijing 100 mL iv bid for 7 days | Conventional treatment | Mortality, ICU stay | ARDS |
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