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Bias Reduction in Calculation of Inpatient Fall Rates

Weiserbs, Kera F. MHS, PhD; Hahn, Barry J. MD, FACEP

doi: 10.1097/NCQ.0000000000000063

Inpatient falls are the most common adverse hospital events. Despite the recognized importance of reducing inpatient falls, tracking and reporting methods are inconsistent. Moreover, recommended methods and statistical tests for comparing rates are complicated. This article demonstrates how to calculate fall rates using 3 common methods, summarizes the advantages and disadvantages of each method, and recommends best practices.

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Former, Department of Academic Affairs (Dr Weiserbs) and Emergency Medicine (Dr Hahn), Staten Island University Hospital, Staten Island, New York. Dr Weiserbs is now a freelance consultant.

Correspondence: Kera F. Weiserbs, MHS, PhD, Statistical Consultant 445 Argyle Rd, Brooklyn, NY 11218 (

The authors declare no conflict of interest.

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Web site (

Accepted for Publication: March 2, 2014

Published online before print: April 15, 2014

© 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins