Meta Analysis : A statistical technique that combines the independent estimates of crash reduction effectiveness from separate studies into one estimate by weighing each individual estimate according to its variance
The Organisation for Economic Co-operation and Development OECD (French: Organisation de coop ration et de developpement conomiques, OCDE), "Glossary", in Sharing Road Safety: Developing an International Framework for Crash Modification Functions (report serves as a guide to how research results can be shared internationally. It provides checklist for systematic review of road safety studies and a framework for standardising methodology), OECD Publishing, Paris, France 2012. http://www.keepeek.com/Digital-Asset-Management/oe cd/transport/sharing-road-safety/glossary_97892821 03760-12-en#page6, (Road Trfc and Transp Sfty - Brit) {604}