Table 2

Allocation of retrievals in the manual review (3 GLAD-strategies, 9 diseases)

Allocation of retrievals

Unique and relevant retrievals

Non-relevant retrievals and duplicates

Total


SUMSearch


Strategy tested

unique and relevant retrievals; no duplicates

non-relevant retrievals removed from manual review; duplicates of:

- relevant retrievals

- non-relevant retrievals

raw retrievals; duplicates between PubMed and NGC

Strategies not tested

unique and relevant retrievals; no duplicates

non-relevant retrievals removed from manual review; duplicates of and between:

- relevant retrievals

- non-relevant retrievals

raw retrievals; duplicates of and between retrievals

All strategies

unique and relevant retrievals; no duplicates

non-relevant retrievals removed from manual review; duplicates of and between:

- relevant retrievals

- non-relevant retrievals

raw retrievals; duplicates of and between retrievals


Google Scholar


Strategy tested

unique and relevant retrievals; no duplicates

non-relevant retrievals removed from manual review; duplicates of:

- relevant retrievals

- non-relevant retrievals

raw retrievals; duplicates between singular and plural

Strategies not tested

unique and relevant retrievals; no duplicates

non-relevant retrievals removed from manual review; duplicates of and between:

- relevant retrievals

- non-relevant retrievals

raw retrievals; duplicates of and between retrievals

All strategies

unique and relevant retrievals; no duplicates

non-relevant retrievals removed from manual review; duplicates of and between:

- relevant retrievals

- non-relevant retrievals

raw retrievals; duplicates of and between retrievals


Haase et al. BMC Medical Research Methodology 2007 7:28   doi:10.1186/1471-2288-7-28

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