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Table 2 Risk of bias assessment within the trials

From: Blocking malaria transmission to Anopheles mosquitoes using artemisinin derivatives and primaquine: a systematic review and meta-analysis

Study location (year) Random sequence generation (selection bias) Allocation concealment (selection bias) Blinding of participants & personnel (performance bias) Blinding of outcome assessment (detection bias) Incomplete outcome data (attrition bias) Selective reporting (reporting bias) Other Ref.
Gambia (2000) low low low low low low unclear [15]
Gambia (1999) low unclear low low low low unclear [16]
Gambia (1998) low unclear low low low low unclear [16]
Kenya (2003–4) low unclear low low low low unclear [17]
Gambia (2002) low low low low low low unclear [18]
USA* high high low low unclear unclear unclear [19]
USA (1968) high high low low unclear unclear unclear [20]
  1. *The study year is not mentioned in the publication. Ref = references.