Glossary

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N

Network

A system of interconnected individuals, groups or organizations as well as the links between them.

National Collaborating Centre for Methods and Tools. (2009). Networking in Public Health: Exploring the Value of Networks to the National Collaborating Centres for Public Health. Hamilton, ON: Robeson, P. http://www.nccmt.ca/pubs/NetworkingPaperApr09EN_WEB.pdf

Non-experimental Study (see Observational Study)
Number Needed to Treat (NNT)

Is the number of patients who must be treated to prevent 1 additional negative event (or to promote 1 additional positive event). This is calculated as 1/absolute risk reduction (rounded to the next whole number), accompanied by the 95% confidence interval.1,2 When assessing clinical significance, one must consider the NNT against any harms or adverse effects.

1 BMJ Publishing Group Ltd and RCN Publishing Company Ltd. (2009). Glossary. Evidence-Based Nursing, 128(4), doi:10.1136/ebn.12.4.128-b

2 Buckingham, J., Fisher, B., & Saunders, D. (2008). Evidence based medicine toolkit: Glossaries – clinical epidemiology. Retrieved from http://www.ebm.med.ualberta.ca/Glossary.html