Chemoprevention of Breast Cancer: Summary of the Evidence, Table A-2. Breast Cancer Chemoprevention: Search Strategy Results

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Search No.	Search Terms	No. of Results
1	Explode breast neoplasms	90,662
2	Limit 1 to (human and female)	70,714
3	Explode Tamoxifen	6,743
4	Explode estrogen antagonists or raloxifene	10,229
5	Explode estrogen antagonists or keoxifen	10,206
6	Selective estrogen receptor modulator	32
7	3 or 4 or 5 or 6	10,230
8	2 and 7	3,756
9	Limit 8 to controlled clinical trial	45
10	Limit 8 to randomized controlled trials	447
11	Explode randomized controlled trials	12,678
12	Explode random allocation	38,532
13	Explode single-blind method	4,241
14	Explode double-blind method	55,099
15	11 or 12 or 13 or 14	98,408
16	8 and 15	349
17	9 or 10 or 16	635