This known item search strategy was to identify included studies in Review 24, as listed in Appendix 3. There were two included studies in this review. Numbers in brackets were the number of records found in OVID MEDLINE.

1 (Ekberg$ and Bjorkqvist$).au. and "1994" .yr. (3)

2 from 1 keep 1 (1)

Line 1 and Line 2 identified 1st included study

3 (Jensen$ and Nygren$).au. and "1995" .yr. (1)

Line 3 identified 2nd included study

4 or/2–3 (2)

Line 4 pooled the two included studies by "or"

Subject SS is Subject search strategy, as presented in the review

Zhang et al. BMC Medical Research Methodology 2006 6:23   doi:10.1186/1471-2288-6-23

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