To determine the typical proportions of diagnoses for patients presenting with dizziness or vertigo based on clinical speciality and to assess the change in proportions of diagnoses over time.
Following PRISMA guidelines, systematic searches of PubMed and CINAHL databases and follow-up reference searches were performed for articles published in English up to October 2016.
Analysis of searches yielded 42 studies meeting the criteria of case series of adult patients with dizziness and/or vertigo presenting to general practice, emergency departments or specialist outpatient clinics.
Data comprising demographics, diagnostic cases, and the total number of cases were recorded and independently tested, followed by a risk of bias analysis.
Sample size weighted proportions expressed as percentages with confidence intervals were calculated and compared using χ2 analysis and a reference proportion formed by the combination of Ear Nose and Throat and Neurotology case series published between 2010 and 2016. Analysis of diagnostic trends over time used Poisson regression with consideration for overdispersion.
This systematic review of case series demonstrated significant differences in the proportions of diagnoses for patients presenting with dizziness or vertigo, depending on the specialty making the diagnosis. ENT proportions were dominated by BPPV, Psychogenic and Menière's disease diagnostic categories, whereas emergency proportions were dominated by Other, Cardiac, and Neurological categories. Analysis of case series proportions over time revealed increases in diagnoses such as Benign Paroxysmal Positional Vertigo and Vestibular Migraine, and a corresponding decrease in the diagnoses of Menière's disease.
*School of Allied Health, Australian Catholic University
†Department of Physiotherapy, Royal Brisbane and Women's Hospital
‡Department of Statistics, QIMR Berghofer Institute of Medical Research
§School of Allied Health Sciences, Griffith University, Brisbane, Australia
Address correspondence and reprint requests to Ian Gerard Parker, B.Phty(Hons), Physiotherapy Department, Royal Brisbane and Women's Hospital, RBWH, Herston, Queensland 4029, Australia; E-mail: email@example.com
No funding was obtained to conduct the systematic review.
The authors disclose no conflicts of interest.
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