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Table 5 Risk of bias of cohort studies with NOS

From: Association of G6PD status and haemolytic anaemia in patients receiving anti-malarial agents: a systematic review and meta-analysis

Study

Selection

Comparability

Outcome

Total

Quality

Representativeness

Selection of non-exposed cohort

Ascertainment of exposure

Outcome of interest at the start of the study

Assessment of outcome

Duration of follow up

Adequacy of follow up cohorts

Poirot et al. [24]

*

*

*

*

*

*

*

*

8

High quality

Silva et al. [15]

 

*

*

  

*

  

3

Very high risk of bias

Avalos S et al. [27]

*

*

*

*

*

*

*

*

8

High quality

Brito-Sousa JD et al. [16]

*

*

*

  

*

*

 

5

High risk of bias

Ley et al. [28]

*

*

*

*

*

*

*

*

8

High quality

  1. Certainty of Evidence
  2. Our assessment of the quality of evidence using the GRADE approach is presented in the summary of findings in Table 6
  3. NOS Newcastle–Ottawa Scale
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Malaria Journal

ISSN: 1475-2875

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