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Article History

Accepted: 18 September 2022

First Online: 7 November 2022

Declarations

:

: Financial support for this study was provided by a Medical Research Council Centre pump-priming award. The funding agreement ensured the authors’ independence in designing the study, interpreting the data, writing, and publishing the report. The views expressed are those of the author(s) and are not necessarily those of author-affiliated institutions, including the National Institute for Health Research, the UK Health Security Agency or the Department of Health and Social Care.

: The authors declare they have no conflicts of interest.

: Not applicable.

: Not applicable.

: Not applicable.

: All data used for this tutorial paper are available at

: Code for the R model used in this tutorial can be found on GitHub at the following link. The corresponding original MS Excel model is available open-access and can be downloaded from the following link[].

: N. Green: Conceptualisation, writing original draft, validation, writing review and editing. F. Lamrock: Conceptualisation, writing original draft, validation, writing review and editing. N. Naylor: validation, writing review and editing. J. Williams: validation, writing review and editing. A. Briggs: Resources, writing review and editing.