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.

The "evidence-based practice inventory": reliability and validity was demonstrated for a novel instrument to identify barriers and facilitators for Evidence Based Practice in health care.

Objectives: To design and validate a practical questionnaire for clinicians, to identify barriers and facilitators for evidence-based practice (EBP), that is, the use of research evidence in patient care. The inventory is ultimately intended for departments to assess local conditions for EBP, to aim and evaluate efforts at improving or maximizing EBP.

Study Design And Setting: We derived candidate items from existing EBP scales, psychology, and behavioral economics.

Nasal endoscopy is recommended for diagnosing adults with chronic rhinosinusitis.

Objective: To assess the diagnostic value of nasal endoscopic findings in adults suspected of chronic rhinosinusitis.

Data Sources: PubMed, EMBASE, and the Cochrane Library.

Review Methods: A comprehensive search was performed up to March 5, 2013.

No evidence for distinguishing bacterial from viral acute rhinosinusitis using symptom duration and purulent rhinorrhea: a systematic review of the evidence base.

Objective: To evaluate the diagnostic value of symptom duration and purulent rhinorrhea in adults suspected of having acute bacterial rhinosinusitis.

Data Sources: PubMed, EMBASE, and the Cochrane Library.

Review Methods: We performed a comprehensive systematic search on March 28, 2013.

Inconclusive evidence that age predicts a prolonged or chronic course of acute rhinosinusitis in adults: a systematic review of the evidence base.

Objective: To review the evidence whether the risk for a prolonged or chronic course increases with age in adult patients with acute rhinosinusitis.

Data Sources: PubMed, EMBASE, and the Cochrane Library.

Review Methods: A comprehensive literature search was performed on March 24, 2013, and articles were screened and selected using predefined inclusion and exclusion criteria.

No evidence for distinguishing bacterial from viral acute rhinosinusitis using fever and facial/dental pain: a systematic review of the evidence base.

Objective: To assess the diagnostic value of fever and facial and dental pain in adults suspected of acute bacterial rhinosinusitis.

Data Sources: PubMed, EMBASE, and the Cochrane Library.

Review Methods: A comprehensive systematic search was performed on March 18, 2013.

Limited evidence: higher efficacy of nasal saline irrigation over nasal saline spray in chronic rhinosinusitis--an update and reanalysis of the evidence base.

Objective: To assess the effectiveness of nasal saline irrigation in adult patients with chronic rhinosinusitis.

Data Sources: PubMed, EMBASE, the Cochrane Library.

Review Methods: A comprehensive search was performed, and 2 authors independently screened publications.

Inconclusive evidence for allergic rhinitis to predict a prolonged or chronic course of acute rhinosinusitis.

Objective: To systematically review the evidence on allergic rhinitis as a predictor for a prolonged or chronic course in adult patients with acute rhinosinusitis.

Data Sources: Pubmed, EMBASE, and the Cochrane library.

Review Methods: A systematic literature search was performed on March 15, 2013.

Absence of evidence for enhanced benefit of antibiotic therapy on recurrent acute rhinosinusitis episodes: a systematic review of the evidence base.

Objective: To systematically review the evidence base on the effectiveness of short-course antibiotic therapy in adult patients with a recurrent episode of acute rhinosinusitis as part of a disease pattern on severity and duration of symptoms and recurrences.

Data Sources: PubMed, EMBASE, and the Cochrane Library.

Review Methods: A comprehensive search was performed up to March 21, 2013.

Limited evidence for effects of intranasal corticosteroids on symptom relief for recurrent acute rhinosinusitis.

Objective: To systematically review the evidence base on the effectiveness of intranasal corticosteroids in adult patients with recurrent acute rhinosinusitis. Data Sources Pubmed, EMBASE, and the Cochrane Library.

Review Methods: A comprehensive search was performed up to March 20, 2013.