[Telephone surveys for the study of catastrophic costs due to tuberculosis in Colombia: a novel toolPesquisas telefônicas para um estudo de custos catastróficos da tuberculose na Colômbia: uma ferramenta inovadora].

The study of catastrophic costs incurred by people affected by tuberculosis (TB), conducted in Colombia during the COVID-19 pandemic, provided the opportunity to implement telephone surveys for data collection. This constitutes a methodological innovation regarding the standards established by the World Health Organization (WHO) which, for this type of study, usually rely on face-to-face surveys of patients attending health facilities. The study design, objectives, and methodology were adapted from the WHO publication .