Table 1

Recall of each strategy across databases

Potentially relevant ("tested positive") records identified by each strategy

Recall: Potentially relevant records ("tested positive") as a percentage (number) of total initial yield


1)Thesaurus

3537

47.6% (3537/7420)

2)Free-text

3451

46.5% (3451/7420)

3)Broad-based

3912

52.7% (3912/7420)

Total initial yield (duplicates and non-human eliminated)

7420

-


Shaw et al. BMC Medical Research Methodology 2004 4:5   doi:10.1186/1471-2288-4-5

Open Data