Figure 2From: Heterogeneity prevails: the state of clinical trial data management in Europe - results of a survey of ECRIN centres Extend of functionalities in CDMS. Implemented functionalities of CDMS used in ECRIN centres (% of centres using CDMS with corresponding functionalities). DDE (double data entry) is the double input of paper based source data into the electronic CRF to avoid type errors.Back to article page