Tools and techniques

Tools and Techniques - Statistics: descriptive statistics

EuroIntervention 2013;9:1001-1003. DOI: 10.4244/EIJV9I8A167

Sanne Hoeks*, PhD; Isabella Kardys, MD, PhD; Mattie Lenzen, PhD; Ron van Domburg, PhD; Eric Boersma, PhD

Clinical Epidemiology Unit, Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands

Generally, data can be classified as either numerical or categorical (otherwise known as quantitative and qualitative)1. Numerical data are numerical in nature, while categorical observations

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