Table 2. Study design and rigor assessment.

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 socio-demographics	Comparison groups equivalent at baseline on disclosure
Cognitive-behavioral support groups
Futterman et al., 2010 [33]	Yes	Yes	Yes	No	No	No	No	Yes1
Jones et al., 2013 [34]	Yes	Yes	Yes	Yes	No	Yes	No	No1
Kaaya et al., 2013 [35]	Yes	Yes	Yes	Yes	No	No	Yes	NR
Mundell et al., 2011 [37]	Yes	Yes	Yes	No	No	No	No	No
Sarnquist et al., 2014 [41]	Yes	Yes	Yes	No	No	Yes	Yes	Yes
Snyder et al., 2014 [42]	Yes	No	Yes	NA	No	No	NA	NA
Wouters et al., 2009 [39]	Yes	Yes	No	No	Yes	Yes	NR	NR
Home-based or peer/community health workers
MacNeil et al., 1999 [36]	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes
Ncama, 2007 [38]	No	Yes	No	No	Partial2	NA	No	NA
Rochat et al., 2013 [29]	Yes	No	Yes	NA	No	Yes	NA	NA
Rochat et al., 2014 [30]	Yes	No	Yes	NA	No	Yes	NA	NA
Wouters et al., 2009 [39]	See above
Zuyderduin et al., 2008 [40]	Yes	Yes	Yes	No	No	Yes	Yes	NR3
Partner notification
Brown et al., 2011 [31]	No	Yes	No	Yes	No	NA	NR	Yes4
Henley et al., 2013 [33]	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.