Research Paper: Data Quality of General Practice Electronic Health Records: The Impact of a Program of Assessments, Feedback, and Training. - Mark Porcheret; Rhian Hughes; Dai Evans; Kelvin Jordan; Tracy Whitehurst; Helen Ogden; Peter Croft (J. Am. Medical Informatics Assoc., 2004)

Calculating the Random Guess Score of Multiple-Response and Matching Test Items. - Silvester Draaijer; Sally E. Jordan; Helen Ogden (TEA, 2017)