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Table 1 Publications in the Journal of the AAGL (1994–2002) according to type. *Rounded figures

From: Levels of evidence in endoscopic research: a longitudinal survey

Publication type N %*
Therapeutic trials 549 63.4
Diagnostic trials 14 1.6
Surveys (questionnaires) 14 1.6
Essays without trial (guidelines, editorials, etc.) 204 23.7
Describing technique 40 4.6
Fundamental study 19 2.2
Animal study 22 2.5
Total 862