Development of an electronic burns register: Digitisation of routinely collected hospital data for global burns surveillance

•We detail how to use routinely collected data for a new electronic burn register.•Methods include how to assess data quality, digitise data, and complete verification.•Process mapping should be used to detail potential sources of selection bias.•Two-step verification yielded very low error rates (6 errors in 10,000 fields).•Data presented utilising these methods would adhere to STROBE and RECORD guidance.