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. 2018 Jul 15;73(8):1724–1734. doi: 10.1111/all.13430

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© 2018 The Authors. Allergy Published by John Wiley & Sons Ltd.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Work productivity and activity impairment (WPAI) results by angioedema classification. Absenteeism was defined as percentage of work time missed due to chronic spontaneous urticaria (CSU) in the past 7 days. Presenteeism was defined as percentage impairment while working due to CSU in the past 7 days. Overall work impairment was defined as percentage work impairment due to CSU in the past 7 days, incorporating both absenteeism and presenteeism using the following validated WPAI algorithm: overall work impairment = absenteeism + (1‐absenteeism)*presenteeism. *P < .001 (Yes—angioedema vs No—angioedema); **P < .05 (Yes—angioedema vs No—angioedema). Patients who fell into the misaligned category were not included in the statistical comparisons. SD, standard deviation; WPAI, Work Productivity and Activity Impairment. [Colour figure can be viewed at http://www.wileyonlinelibrary.com/]