Advice
Search strategy and evidence selection
Search strategy
Embase 1980 to 2014 Week 39, Ovid MEDLINE(R) In-Process & Other Non‑Indexed Citations and Ovid MEDLINE(R) 1946 to Present; searched 1 October 2014
1. Endoscopy, Digestive System/ or cholangioscopy.mp. or Cholangiopancreatography, Endoscopic Retrograde/
2. cholangiopancreatoscopy.mp.
3. cholecystoscopy.mp.
4. ercp.mp.
5. 1 or 2 or 3 or 4
6. single operator.mp.
7. direct visuali?ation.mp. [mp=ti, ab, sh, hw, tn, ot, dm, mf, dv, kw, nm, kf, px, rx, ui]
8. 6 or 7
9. 5 and 8
10. spyglass.mp. [mp=ti, ab, sh, hw, tn, ot, dm, mf, dv, kw, nm, kf, px, rx, ui]
11. 9 or 10
12. remove duplicates from 11
13. limit 12 to yr="2006 -Current"
14. limit 13 to english language
15. remove duplicates from 14
The CRD database was searched using the following keywords:
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Any field: spyglass/OR
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Any field: single operator cholangioscopy/OR
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Any field: direct visualisation cholangioscopy
Evidence selection
Clinical evidence
For clinical evidence:
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Total number of publications reviewed: 388
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Total number of publications considered relevant: 42 (74 full publications and 91 abstracts)
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Total number of publications selected for inclusion in this briefing: 8 (8 full publications and 0 abstracts)
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Exclusion criteria: case studies, editorials, letters, reviews, animal studies, and non‑English language studies, non prospective studies, ex‑vivo studies.