RT Journal Article SR Electronic T1 Developing a video expert panel as a reference standard to evaluate respiratory rate counting in paediatric pneumonia diagnosis: protocol for a cross-sectional study JF BMJ Open JO BMJ Open FD British Medical Journal Publishing Group SP e067389 DO 10.1136/bmjopen-2022-067389 VO 12 IS 11 A1 Ahad Mahmud Khan A1 Salahuddin Ahmed A1 Nabidul Haque Chowdhury A1 Md Shafiqul Islam A1 Eric D McCollum A1 Carina King A1 Ting Shi A1 Kamrun Nahar A1 Robynne Simpson A1 Ayaz Ahmed A1 Md Mozibur Rahman A1 Abdullah H Baqui A1 Steve Cunningham A1 Harry Campbell A1 , YR 2022 UL http://bmjopen.bmj.com/content/12/11/e067389.abstract AB Introduction Manual counting of respiratory rate (RR) in children is challenging for health workers and can result in misdiagnosis of pneumonia. Some novel RR counting devices automate the counting of RR and classification of fast breathing. The absence of an appropriate reference standard to evaluate the performance of these devices is a challenge. If good quality videos could be captured, with RR interpretation from these videos systematically conducted by an expert panel, it could act as a reference standard. This study is designed to develop a video expert panel (VEP) as a reference standard to evaluate RR counting for identifying pneumonia in children.Methods and analysis Using a cross-sectional design, we will enrol children aged 0–59 months presenting with suspected pneumonia at different levels of health facilities in Dhaka and Sylhet, Bangladesh. We will videorecord a physician/health worker counting RR manually and also using an automated RR counter (Children’s Automated Respiration Monitor) from each child. We will establish a standard operating procedure for capturing quality videos, make a set of reference videos, and train and standardise the VEP members using the reference videos. After that, we will assess the performance of the VEP as a reference standard to evaluate RR counting. We will calculate the mean difference and proportions of agreement within±2 breaths per minute and create Bland-Altman plots with limits of agreement between VEP members.Ethics and dissemination The study protocol was approved by the National Research Ethics Committee of Bangladesh Medical Research Council, Bangladesh (registration number: 39315022021) and Edinburgh Medical School Research Ethics Committee (EMREC), Edinburgh, UK (REC Reference: 21-EMREC-040). Dissemination of the study findings will be through conference presentations and publications in peer-reviewed scientific journals.