Review Article

Acupuncture for Tourette Syndrome: A Systematic Review

Table 3

Risk of bias assessment of included studies.

BiasGuo et al., 2004 [36]Liu et al., 2010 [30]Xu and Zhu, 2009 [33]Zhang et al., 2015 [34]Mu et al., 2009 [35]Chi and Sun, 2004 [37]Yang et al., 2007 [38]

Random sequence generation
(selection bias)
Random number table
(LR)
Random number table
(LR)
NR
(UR)
Random number table
(LR)
Random number table
(LR)
Random number table
(LR)
Random number table
(LR)

Allocation concealment
(selection bias)
URURURURURURUR

Blinding of participants and personnel (performance bias)HRHRHRHRHRHRHR

Blinding of outcome assessment
(detection bias)
URURURURURURUR

Incomplete outcome data
(attrition bias)
LRLRLRLRLRLRLR

Selective reporting (reporting bias)URURURURURURUR

Other biasLRLRLRLRLRLRLR

UR: unclear risk; LR: low risk; HR: high risk; NR: no reported.