Evidence Table 3. Design characteristics for all studies

CharacteristicsNo. of Studies
Study design
RCT, parallel45
RCT, crossover1
Non-RCT, contemporaneous controls5
Non-RCT, historical controls18
Case series74
Review Article0
Unclear0
Other7
Direction of investigation
Prospective129
Retrospective20
Unclear1
Not reported0

From: Evidence Tables

Cover of Criteria for Weaning from Mechanical Ventilation
Criteria for Weaning from Mechanical Ventilation.
Evidence Reports/Technology Assessments, No. 23.
Cook D, Meade M, Guyatt G, et al.
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