Overview of study design IIDG=international guideline development group. SPI=surgical preparedness index.

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... scores across all 23 indicators were summed to give a total SPI score for a hospital with a range between 23 (least prepared) and 115 (most prepared). A summary of the Delphi voting rounds is presented in figure 1 and full results are reported in the appendix (pp 4-5). All eight independent raters considered the 23 indicators to have high (20 indicators) or moderate (three indicators) relevance to maintaining volume of planned surgery across all five examples of external shocks (figure 2) with high agreement between raters (ICC 0·76 [95% CI 0·59-0·89]). ...