• Adrián González-Marrón, Jordi Real, Carles Forné, Albert Roso-Llorach, Eva María Navarrete-Muñoz, and Jose M Martínez-Sánchez.
• Group of Evaluation of Health Determinants and Health Policies, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain.
• Med Clin (Barc). 2019 Sep 27; 153 (6): 239-242.

Background/ObjectivesTo assess the adherence to reporting confidence intervals (CI) for measures of association in multivariable regression models (MRM) in articles with observational design indexed in MEDLINE.Material And MethodsA literature search was conducted using the MEDLINE bibliographic database to obtain a representative sample of studies with observational design and applying MRM (logistic, linear, and Cox regression) (n=428). Proportions and 95% CI of articles reporting CI for measures of association in MRM were calculated. Percentage ratios (PRs) were also calculated to describe the change in CI reporting before and after the publication of the STROBE statement.Results188 of the 236 abstracts with measures of association (79.7%; 95% CI 74.5, 84.8) and 360 of the 428 main texts (84.1%; 80.6, 87.6) were provided with CI. A non-significant increase of 1% in the abstract, PR=1.01 (0.77, 1.29), and 7% in the main text, PR=1.07 (0.87, 1.28), occurred in the CI reporting after the publication of the STROBE guideline.ConclusionsThe STROBE guideline recommendation on reporting CI should be more thoroughly followed.Copyright © 2018 Elsevier España, S.L.U. All rights reserved.

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