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Vol. 19 - Num. 76

Critical appraisal in small doses

What is the real significance of p-value?

Manuel Molina Ariasa

aServicio de Gastroenterología Pediátrica. Hospital Universitario La Paz. Madrid. España.

Correspondence: M Molina. E-mail:

Reference of this article: Molina Arias M. What is the real significance of p-value? Rev Pediatr Aten Primaria. 2017;19:377-81.

Published in Internet: 30-10-2017


P-value is a widely used term frequently misinterpreted by many readers of scientific articles. We define the significance of p-value, as well as its relation with the reliability and the clinical relevance of the results of the study.


Models, statistical



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