Chinese Herbal Medicine for Postinfectious Cough: A Systematic Review of Randomized Controlled Trials

Table 3

Risk of bias of included studies.

Study ID	Adequate sequence generation	Random sequence generation; (selection bias)	Allocation concealment; (selection bias)	Blinding of participants and personnel; (performance bias)	Blinding of outcome assessment; (detection bias)	Incomplete outcome data; (attrition bias)	Selective reporting; (reporting bias)	Other bias
Fujimori et al., 2001 [26]	NS	Unclear risk	Unclear risk	Unclear risk	Unclear risk	Low risk	Low risk	High risk
Irifune et al., 2011 [27]	NS	Unclear risk	Unclear risk	High risk	High risk	Low risk	Unclear risk	Unclear risk
Qin, 2011 [28]	NS	Unclear risk	Unclear risk	Unclear risk	Unclear risk	Low risk	Unclear risk	Unclear risk
Wang, 2011 [29]	NS	Unclear risk	Unclear risk	High risk	High risk	Unclear risk	Unclear risk	Unclear risk
Song, 2012 [30]	Yes	Low risk	Unclear risk	Unclear risk	Unclear risk	Unclear risk	Unclear risk	Unclear risk
Wu et al., 2011 [31]	Yes	Low risk	Unclear risk	Unclear risk	Unclear risk	Low risk	Unclear risk	Unclear risk
Zhang et al., 2008 [32]	Yes	Low risk	Low risk	Low risk	Unclear risk	Unclear risk	Low risk	Low risk
Wu, 2011 [33]	Yes	Low risk	Low risk	Low risk	Low risk	Low risk	Low risk	Low risk
An, 2002 [34]	NS	Unclear risk	Unclear risk	High risk	High risk	Unclear risk	Unclear risk	Unclear risk
Jiang, 2013[35]	Yes	Low risk	Low risk	Low risk	Low risk	Low risk	Low risk	Low risk
Min, 2011 [36]	Yes	Low risk	Unclear risk	Unclear risk	Unclear risk	Unclear risk	Unclear risk	Unclear risk
Huang, 2009 [37]	No	High risk	High risk	Unclear risk	Unclear risk	Low risk	Unclear risk	Unclear risk