Apixaban for the prevention of venous thromboembolism in people ...

37 Placebos/ (30156)
38 Placebo$.tw. (132592)
39 Randomly allocated.tw. (12904)
40 (allocated adj2 random).tw. (670)
41 or/35-40 (334839)
42 34 or 41 (898482)
43 Case report.tw. (163123)
44 Letter/ (725669)
45 Historical article/ (279830)
46 Review of reported cases.pt. (0)
47 Review, multicase.pt. (0)
48 or/43-47 (1158609)
49 42 not 48 (872894)
50 Meta-Analysis as Topic/ (11769)
51 meta analy$.tw. (35509)
52 metaanaly$.tw. (1039)
53 Meta-Analysis/ (30619)
54 (systematic adj (review$1 or overview$1)).tw. (27764)
55 exp Review Literature as Topic/ (5843)
56 or/50-55 (74197)
57 cochrane.ab. (17451)
58 embase.ab. (14834)
59 (psychlit or psyclit).ab. (830)
60 (psychinfo or psycinfo).ab. (5105)
61 (cinahl or cinhal).ab. (5779)
62 science citation index.ab. (1356)
63 bids.ab. (292)
64 cancerlit.ab. (503)
65 or/57-64 (27532)
66 reference list$.ab. (6383)
67 bibliograph$.ab. (9092)
68 hand-search$.ab. (2741)
69 relevant journals.ab. (470)
70 manual search$.ab. (1526)
71 or/66-70 (18122)
72 selection criteria.ab. (14712)
73 data extraction.ab. (6682)
74 72 or 73 (20232)
75 Review/ (1676497)
76 74 and 75 (14054)
77 Comment/ (451657)
78 Letter/ (725669)
79 Editorial/ (283470)
80 animal/ (4874456)
81 human/ (12075385)
82 80 not (80 and 81) (3584947)
83 or/77-79,82 (4630168)
84 56 or 65 or 71 or 76 (95459)
78
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