Publication

Quality of reporting of confounding remained suboptimal after the STROBE guideline

Pouwels, K. B., Widyakusuma, N. N., Groenwold, R. H. & Hak, E., Jan-2016, In : Journal of Clinical Epidemiology. 69, p. 217-224 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

  • Koen B Pouwels
  • Niken N Widyakusuma
  • Rolf Hh Groenwold
  • Eelko Hak

Objectives: Poor quality of reporting of confounding has been observed in observational studies prior the STrenghtening the Reporting of Observational studies in Epidemiology (STROBE) statement, a reporting guideline for observational studies. We assessed whether the reporting of confounding improved after the STROBE statement.

Study Design and Setting: We searched MEDLINE for all articles about observational cohort and case control studies on interventions with a hypothesized beneficial effect in five general medical and five epidemiologic journals published between January 2010 and December 2012. We abstracted data for the baseline period before the publication of the STROBE statement (January 2004 April 2007) from a prior study. Six relevant items related to confounding were scored for each article. A comparison of the median number of items reported in both periods was made.

Results: In total, 174 articles published before and 220 articles published after the STROBE statement were included. The median number reported items was similar before and after the publication of the STROBE statement [median, 4; interquartile range [IQR], 3-5 vs. median, 4; IQR, 3.75-5]. However, the distribution of the number of reported items shifted somewhat to the right (P = 0.01).

Conclusion: Although the quality of reporting of confounding improved in certain aspects, the overall quality remains suboptimal. (C) 2016 Elsevier Inc. All rights reserved.

Original languageEnglish
Pages (from-to)217-224
Number of pages8
JournalJournal of Clinical Epidemiology
Volume69
Publication statusPublished - Jan-2016

    Keywords

  • Guideline adherence, Confounding factors, Guidelines as topics, Publishing/standards, Editorial policies, Epidemiology, RANDOMIZED-TRIALS, EPIDEMIOLOGIC RESEARCH, SENSITIVITY-ANALYSIS, REDUCING WASTE, BIAS, STATEMENT, ADHERENCE, KNOWLEDGE, JOURNALS, THERAPY

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