Score YES	If the unit of allocation was by institution, team or professional and allocation was performed at all units at the start of the study; or if the unit of allocation was by patient or episode of care and therewas some kind of centralised randomisation scheme; an on-site computer system or if sealed opaque envelopes were used
Score NO	If none of the above mentioned methods were used (or if a CBA)
Score UNCLEAR	If not specified in the paper