This study utilized a unique strategy to estimate its incidence using two commercial claims databases, IMS LifeLink™ and Truven Health Analytics MarketScan(®).  The incidence rate for CD was calculated as 21 (IMS LifeLink™) and 25 (MarketScan(®)) per million person-years. 
IMS LifeLink
This study utilized a unique strategy to estimate its incidence using two commercial claims databases, IMS LifeLink™ and Truven Health Analytics MarketScan(®). 
Truven Health Analytics MarketScan