Interventions to reduce the time to diagnosis of brain tumours

Abstract This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: To systematically evaluate evidence on the effectiveness of interventions that may influence symptomatic participants to present early (shortening the 'Patient Interval'), thresholds for primary care referral (shortening the 'Primary Care Interval'), and time to imaging diagnosis (shortening the 'Secondary Care Interval' and 'Diagnostic Interval'). To produce a brief economic commentary summarising the economic evaluations relevant to these interventions.