Skip to main content

Table 2 Risk of bias assessment

From: Adjunctive subgingival application of Chlorhexidine gel in nonsurgical periodontal treatment for chronic periodontitis: a systematic review and meta-analysis

Author (year)

Random sequence generation

Allocation concealment

Blinding of participants and personnel

Blinding of outcome assessment

Incomplete outcome data

Selective reporting

Other bias

Risk of bias

 

Faramarzi M et al. (2017) [26]

?

low

 

Phogat M et al. (2014) [27]

?

?

X

x

?

?

high

exclusion

Jain M et al. (2013) [28]

?

?

X

x

?

high

exclusion

Chitsazi MT et al. (2013) [29]

?

low

 

Chauhan AS et al. (2013) [30]

?

?

X

x

?

high

exclusion

Verma A et al. (2012) [32]

?

?

X

x

?

?

high

exclusion

Matesanz P et al. (2013) [31]

low

 

Kranti K et al. (2010) [33]

?

?

unclear

 

Paolantonio M. (2009) [34]

?

X

high

 

Gupta R et al. (2008) [35]

?

?

X

x

?

?

high

exclusion

Fonseca DC 2015 [17]

?

low

 

santos VR 2013 [18]

?

low

 

Quirynen M 2006 [2]

x

?

high

 

Swierkot K 2009 [19]

?

x

high

 

unsal E 1994 [11]

?

?

x

x

high

exclusion

lecic J 2016 [10]

?

low

 

Oosterwaal PJM 1991 [12]

?

?

unclear

 
  1. : low risk of bias;?: unclear risk of bias; x: high risk of bias;
  2. Exclusion: when a trial did not meet all four criteria for randomization and blinding methods, it was excluded from quantitative analysis, as its low quality and high bias may have subverted the validity of the results and conclusions