Description as stated in report/paper	Location in text
Total no. randomized (or total pop. at start of study for NRCTs)
Clusters (if applicable, no., type, no. people per cluster)
Baseline imbalances
Withdrawals and exclusions (if not provided below by outcome)
Age
Sex
Race/Ethnicity
Type and duration of surgery (e.g. peripheral or abdominal)
Type of ventilation (spontaneous or mechanical, airway pressures used)
Details of anaesthetic given (including position, premed, preoxygenation, induction & maintenance agents )
Neuromuscular blockade given (agents used)
Training and seniority of intubator
Other relevant sociodemographics
Subgroups measured
Subgroups reported