Statistical Analysis Plan (SAP) for a Very Early Rehabilitation Trial (AVERT): An International Trial to Determine the Efficacy and Safety of Commencing out of Bed Standing and Walking Training (Very Early Mobilization) within 24 h of Stroke Onset vs. Usual Stroke Unit Care. Issue 1 (January 2015) - Bernhardt, Julie; Churilov, Leonid; Dewey, Helen; Lindley, Richard I.; Moodie, Marj; Collier, Janice; Langhorne, Peter; Thrift, Amanda G.; Donnan, Geoffrey; ,