Special article
Numbers are better than words: Verbal specifications of frequency have no place in medicine

https://doi.org/10.1016/0002-9343(83)90819-7Get rights and content

Abstract

We were concerned about the precision (i.e., consensus as to meaning) of adjectives and adverbs used to express frequency in the medical literature. We asked 103 physicians and 106 nonphysicians to assign to each of 22 such modifiers a percentage representing their understanding of the term. As indexed by the standard deviations, the degree of imprecision for 17 terms was so great for both physicians and for laymen as to make their use unacceptable. Consensus was significantly less among laymen than among physicians for 10 of the terms. Greater consensus was shown by native English-speaking physicians than by those with other native languages. Our data suggest further that American graduates of American medical schools show more consensus than American graduates of foreign medical schools. Board-certified physicians did not show greater consensus than physicians who were not board-certified. Verbal expressions of frequency should be eliminated from medical communications; failing that, the author should specify numerically the frequency he intends when he uses any such expression.

References (14)

There are more references available in the full text version of this article.

Cited by (135)

  • The social life of risk probabilities in medicine

    2023, Social Science and Medicine
  • Decisional involvement and information preferences of patients with hematologic malignancies

    2020, Blood Advances
    Citation Excerpt :

    Discrepancies between patient- and physician-reported prognostic estimates are well documented in the literature, suggesting that conversation about cancer and treatment outcomes may not be adequate to meet the information needs of patients.30,31 Physicians may be expressing prognosis in words that may be interpreted differently from numbers by patients.32-34 Discrepancies in prognostic estimates are amplified in non-Hispanic White patients who have lower income and less social support.35

  • The effect of information about false negative and false positive rates on people's attitudes towards colorectal cancer screening using faecal occult blood testing (FOBt)

    2013, Patient Education and Counseling
    Citation Excerpt :

    For example, Woloshin et al. [40] found people assigned a lower numeric value to the word ‘unlikely’ when it was used to describe the likelihood of major complications than they did when it was used to describe the likelihood of minor complications. The use of numbers rather than words to communicate probabilities is therefore recommended, where possible, because numbers lead to more accurate and consistent understandings of risk [41,42]. However the impact of providing this information on attitudes towards colorectal screening remains unknown.

View all citing articles on Scopus
1

From the Departments of Anesthesiology and Medicine, Albany Medical College of Union University, Albany, New York (MAN).

2

From the Department of Psychiatry, State University of New York at Buffalo, Buffalo, New York (SA).

View full text