Oral corticosteroid use for clinical and cost-effective symptom relief of sore throat: study protocol for a randomized controlled trial

BACKGROUND: Management of acute sore throat poses a significant burden on UK general practices, with almost 10% of registered patients attending their GP with sore throat every year. Nearly half of all patients presenting with acute sore throat are treated with antibiotics, despite their limited effect. In a recent systematic review we demonstrated that a single dose of steroids reduced the severity and time to resolution of sore throat. However, all of the trials included looked at the use of steroids alongside antibiotics and only one was in a primary care setting. This trial aims to assess the efficacy and cost-effectiveness of a single oral dose of corticosteroids on symptoms of sore throat in patients receiving either a delayed antibiotic prescription or no antibiotics at all in UK primary care. METHODS/DESIGN: A double-blind, two arm, randomized, placebo controlled trial in adults (≥18 years of age) presenting to primary care with acute sore throat (<seven days). Participants are recruited on the day of presentation to their GP practice. GPs or nurses assess eligibility, record baseline clinical features and obtain a throat swab for bacterial culture. Participants are being randomized to treatment arms at a ratio of 1:1. Treatment arms will be stratified according to whether patients are being given a delayed antibiotic prescription or no antibiotic prescription and by recruiting centre (Oxford, Bristol or Southampton). Outcome data is being collected at 24 and 48 hours via text message or telephone call, from days 0 to 7 using a patient symptom diary and at one month via a GP notes review. DISCUSSION: This will be the first randomized controlled trial of oral corticosteroids in adults presenting to primary care with sore throat in the UK, and the first to examine the clinical and cost-effectiveness of oral corticosteroids for the treatment of sore throat in the absence of antibiotics. TRIAL REGISTRATION: This trial is registered with Current Controlled Trials on 26 March 2013, registration number: ISRCTN17435450. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/1745-6215-15-365) contains supplementary material, which is available to authorized users.