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Table 1 Characteristics of the included studies (N = 170)

From: Reporting of interventions used in cardiothoracic surgery trials: analysis using the Template for Intervention Description and Replication (TIDieR) checklist

JournalN (%)
 Annals of Thoracic and Cardiovascular Surgery6 (3.5)
 Asian Cardiovascular and Thoracic Annals9 (5.3)
 Brazilian Journal of Cardiovascular Surgery8 (4.7)
 European Journal of Cardio-thoracic Surgery28 (16)
 Innovations: technology and techniques in cardiothoracic and vascular surgery2 (1.2)
 Interactive CardioVascular and Thoracic Surgery21 (12.4)
 Journal of Cardiac Surgery1 (0.6)
 Journal of Cardiothoracic Surgery9 (5.3)
 Perfusion15 (8.8)
 Scandinavian Cardiovascular Journal8 (4.7)
 Seminars in Thoracic and Cardiovascular Surgery4 (2.4)
 The Annals of Thoracic Surgery19 (11.2)
 The Journal of Thoracic and Cardiovascular Surgery28 (16.5)
 The Thoracic and Cardiovascular Surgeon12 (7.1)
Authors
 Mean7.3
 Median7
 Range2–16
Funding
 Public28 (16)
 Industry21 (12.4)
 Private18 (10.6)
 Mixed with industry7 (4.1)
 Mixed without industry3 (1.8)
 Not mentioned57 (33.5)
 None34 (20)
 Other2 (1.2)
Hypothesis
 Superiority136 (80)
 Equivalence16 (9.4)
 Other14 (8.2)
 Non-inferiority2 (1.2)
 Not sure2 (1.2)
Study type
 Parallel161 (94.7)
 Factorial6 (3.5)
 Other2 (1.2)
 Crossover1 (0.6)
 Stepped-wedge0
 Cluster0
 Mixed0
Intervention
 Drug57 (33.5)
 Procedure52 (30.6)
 Device25 (14.7)
 Other23 (13.5)
 Mixed13 (7.7)
Blinding
 No-blind106 (62.4)
 Double-blind37 (21.8)
 Single-blind27 (15.9)
Number of participants
 Mean132.4
 Median68
 Range14–2368
Country
 Outside of USA148 (87.1)
 USA13 (7.6)
 Both2 (1.2)
 Not mentioned7 (4.1)
No. of conducting centers
 Single-center147 (86.5)
 Multicenter23 (13.5)
Authors mention CONSORT
 No137 (80.6)
 Yes33 (19.4)
Authors mention TIDieR
 No170 (100)
 Yes0
Is the trial registered?
 Not registered93 (55)
 Registered77 (45)