“…Seventeen papers [16,19,20,23,25,33,[35][36][37][38][39][40][41][42][43][44][45] were selected for review that studied the effect of a SAP on patients' knowledge about their medicines. Five were randomised and controlled [20,23,33,35,36], five were controlled [19,25,[37][38][39] and five were designed only to test patient knowledge before and after taking part in the programme [40][41][42][43][44].…”