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      Predicting frequent COPD exacerbations using primary care data [Corrigendum]

      International Journal of Chronic Obstructive Pulmonary Disease

      Dove Medical Press

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          Abstract

          Kerkhof M, Freeman D, Jones R, Chisholm A, Price DB. Int J Chron Obstruct Pulmon Dis. 2015;10:2439–2450. Page 2450, the formula shown in the Supplementary materials is incorrect. The correct formula is shown below. The formula: Risk of ≥2 COPD exacerbations within the next 12 months =1/{1 + exp[− (−0.7306 + 0.8840 × 1 previous exacerbation in last 12 months + 1.4786 × 2 previous exacerbations in last 12 months + 1.9857 × 3 previous exacerbations in last 12 months + 2.8811 × ≥4 previous exacerbations in last 12 months − 0.0093 × FEV1% predicted + 0.0360 × age − 0.0004 × age2 − 1.2194 × height (in meter) + 0.2518 × (blood eosinophil count ≥400/μL in a patient who is not currently smoking) + 0.2953 × any evidence of asthma × 0.3018 × history of non-allergic rhinitis + 0.3298 × history of nasal polyps + 0.1164 × history of ischemic heart disease + 0.1071 × history of anxiety or depression + 0.1689 × history of GERD)]}. For the yes/no variables, a value of 1 should be used for “yes” and a value of 0 for “no.”

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          Author and article information

          Journal
          Int J Chron Obstruct Pulmon Dis
          Int J Chron Obstruct Pulmon Dis
          International Journal of COPD
          International Journal of Chronic Obstructive Pulmonary Disease
          Dove Medical Press
          1176-9106
          1178-2005
          2018
          15 August 2018
          15 August 2018
          : 13
          : 2471
          Article
          copd-13-2471
          10.2147/COPD.S181390
          6101735
          © 2018 Kerkhof et al. This work is published and licensed by Dove Medical Press Limited

          The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

          Categories
          Corrigendum

          Respiratory medicine

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