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. 2009 Oct 7;2009(4):CD007190. doi: 10.1002/14651858.CD007190.pub2

Peltzer 2006.

Methods This controlled before and after study (CBA) used a quasi‐experimental design where traditional healers practicing in a particular area were assigned to either an intervention or control group
Participants 233 traditional healers (160‐intervention and 73‐control group)
Interventions Two researchers gave a workshop over 3.5 days focusing on HIV/AIDS, sexually transmitted infections (STI) 
 and tuberculosis (TB). TB data will not be used in this review
Outcomes Semi‐structured Questionnaire (self‐report): 13 items on HIV/AIDS knowledge ; 9 items on HIV/STI Management Practices; 7 item TB knowledge index; 5 item Risk Index
Notes Study Quality: Low
Risk of bias
Bias Authors' judgement Support for judgement
Baseline measurement Low risk Traditional healer outcomes were measured prior to the intervention and there were no substantial differences.
Characteristics for studies using second site as control (CBA) or Concealment of allocation(CCTs) High risk There are significant differences between the control and the experimental group with regards to gender.
Blinded assessment of primary outcome(s) (protection against detection bias) Unclear risk The study did not specify whether the primary outcome measure was assessed blindly
Protection against contamination ‐ Studies using second site as control Low risk Cluster sampling was used to include all traditional healers from four selected communities
Reliable primary outcome measure(s) High risk The reliability of the measures were relatively low. HIV/AIDS knowledge‐0.72; HIV/STI Management Practices‐0.81; TB knowledge index‐0.50; Risk Index‐0.48.
Follow‐up of professionals (protection against exclusion bias) High risk Of the 233 traditional healers in the study, 155 (67%) completed the 7–9 months follow‐up interview; 66% intervention and 69% control