Can we achieve better recruitment by providing better information? Meta-analysis of ‘studies within a trial’ (SWATs) of optimised participant information sheets by Madurasinghe, VW, Bower, P, Eldridge, S, Collier, D, Graffy, J, Treweek, S, Knapp, P, Parker, A, Rick, J, Salisbury, C, Man, MS, Torgerson, D, Sheridan, R, Sullivan, F, Cockayne, S, Dack, C