Table 1

Full data extraction table

ItemContent
Publication detailsName of author
Year of publication
Name and impact factor of journal
Participant detailsAmerican Society of Anesthesiologist Classification
Sex
Age
No of participants
Setting
Device detailsType of device
Methods of selection device size
Surgery detailsTime of surgery
Type of surgery
Airway complicationsMethod of registration of airway complications
Time of airway complications
Sore throat
Dysphagia
Dysphonia
Cough
Blood on device
Laryngospasm
Other
Risk of biasRandom sequence generation
Allocation concealment
Blinding of participants and personnel
Blinding of outcome assessment
Incomplete data
Selective outcome reporting
Other bias