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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.