Reiniging, desinfectie en sterilisatie (herbruikbare) medische hulpmiddelen - Module 5 Risk-of-bias-tabel

Risk of bias table for interventions studies (cohort studies based on risk of bias tool by the CLARITY Group at McMaster University)

Author, year

Selection of participants

Was selection of exposed and non-exposed cohorts drawn from the same population?

 

Exposure

Can we be confident in the assessment of exposure?

 

Outcome of interest

Can we be confident that the outcome of interest was not present at start of study?

 

Confounding-assessment

Can we be confident in the assessment of confounding factors? 

 

Confounding-analysis

Did the study match exposed and unexposed for all variables that are associated with the outcome of interest or did the statistical analysis adjust for these confounding variables?

 

Assessment of outcome

Can we be confident in the assessment of outcome?

 

Follow up

Was the follow up of cohorts adequate? In particular, was outcome data complete or imputed?

 

Co-interventions

Were co-interventions similar between groups?

 

Overall Risk of bias

 

Definitely yes, probably yes, probably no, definitely no

Definitely yes, probably yes, probably no, definitely no

Definitely yes, probably yes, probably no, definitely no

Definitely yes, probably yes, probably no, definitely no

Definitely yes, probably yes, probably no, definitely no

Definitely yes, probably yes, probably no, definitely no

Definitely yes, probably yes, probably no, definitely no

Definitely yes, probably yes, probably no, definitely no

Low, Some concerns, High

Gold, 2013

Definitely yes

Reason:
Identical surfaces were contaminated using the same method

Probably yes

Reason:
Exposure was introduced in all samples using the same method.

Definitely yes

Reason:
Outcome is reduction of the introduced contamination.

Definitely yes

Exposure was introduced in a controlled environment

 

Not applicable

Probably no

Reason:
Limited repetitions

Not applicable

 

Not applicable

 

Some concerns

Gonzales, 2015

Definitely yes

Reason:
Identical surfaces were contaminated using the same method

Probably yes

Reason:
Exposure was introduced in all samples using the same method.

Definitely yes

Reason:
Outcome is reduction of the introduced contamination.

Exposure was introduced in a controlled environment

 

Not applicable

Probably no

Reason:
Limited repetitions

Not applicable

 

Not applicable

 

Some concerns