A comparison of international clinical practice guidelines on adult chronic rhinosinusitis shows considerable variability of recommendations for diagnosis and treatment.

Objectives: To compare international clinical practice guidelines on adult chronic rhinosinusitis (CRS).

Design: Extensive literature search in Embase, PubMed and the internet (Google, websites of well-known guideline organizations) on November 21st 2018.

Main Outcome Measures: Guidelines' quality was measured by the AGREE II instrument.

Healthcare utilisation, follow-up of guidelines and practice variation on rhinosinusitis in adults: A healthcare reimbursement claims study in The Netherlands.

Objectives: To provide insight into healthcare utilisation of rhinosinusitis, compare data with clinical practice guideline recommendations and assess practice variation.

Design: Anonymised data from claims reimbursement registries of healthcare insurers were analysed, from 1 January 2016 until 31 December 2016.

Setting: Secondary and tertiary care in the Netherlands.

Publications on Clinical Research in Otolaryngology-A Systematic Analysis of Leading Journals in 2010.

We wanted to asses and characterize the volume of Otolaryngology publications on clinical research, published in major journals. To assess volume and study type of clinical research in Otolaryngology we performed a literature search in high impact factor journals. We included 10 high impact factor Otolaryngology journals and 20 high impact factor medical journals outside this field (2011).

Otolaryngologists adhere to evidence-based guidelines for chronic rhinosinusitis.

Purpose: To assess awareness of, opinion about and adherence to evidence-based guidelines on chronic rhinosinusitis among Dutch Otolaryngologists.

Methods: We assessed implementation of two guidelines, one Dutch and one European, that are both intended for diagnosis and treatment of patients with chronic rhinosinusitis. We invited 485 Otolaryngologists to fill out a questionnaire and report on their opinion on and adherence to the guidelines.

Quality of reporting and risk of bias in therapeutic otolaryngology publications.

Background: High-quality trials have the potential to influence clinical practice.

Methods: Ten otolaryngology journals with the highest 2011 impact factors were selected and publications from 2010 were extracted. From all medical journals, the 20 highest impact factor journals were selected, and publications related to otolaryngology for 2010 and 2011 were extracted.