The Evidence Project risk of bias tool: assessing study rigor for both randomized and non-randomized intervention studies

Table 2 Example of a completed Evidence Project risk of bias tool from a review of interventions to increase HIV serostatus disclosure in low- and middle-income countries [16]

Study	Cohort	Control or comparison group	Pre/post intervention data	Random assignment of participants to the intervention	Random selection of participants for assessment	Follow-up rate of 80% or more	Comparison groups equivalent on sociodemographics	Comparison groups equivalent at baseline on disclosure
Cognitive-behavioral support groups
Futterman et al.	Yes	Yes	Yes	No	No	No	No	Yes¹
Jones et al.	Yes	Yes	Yes	Yes	No	Yes	No	No¹
Kaaya et al.	Yes	Yes	Yes	Yes	No	No	Yes	NR
Mundell et al.	Yes	Yes	Yes	No	No	No	No	No
Sarnquist et al.	Yes	Yes	Yes	No	No	Yes	Yes	Yes
Snyder et al.	Yes	No	Yes	NA	No	No	NA	NA
Wouters et al.	Yes	Yes	No	No	Yes	Yes	NR	NR
Home-based or peer/community health workers
MacNeil et al.	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes
Ncama	No	Yes	No	No	Partial²	NA	No	NA
Rochat et al.	Yes	No	Yes	NA	No	Yes	NA	NA
Rochat et al.	Yes	No	Yes	NA	No	Yes	NA	NA
Wouters et al.	See above
Zuyderduin et al.	Yes	Yes	Yes	No	No	Yes	Yes	NR³
Partner notification
Brown et al.	No	Yes	No	Yes	No	NA	NR	Yes⁴
Henley et al.	No	Yes	No	No	No	NA	NR	NA

NR not reported, NA not applicable
¹Calculated from additional data provided by authors
²Intervention group randomly selected, control group non-randomly selected
³Not calculable based on data provided in the article
⁴All participants were newly diagnosed, so presumably none had disclosed prior to the intervention

ISSN: 2046-4053