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. 2021 Nov 22;77(6):606–615. doi: 10.1136/thoraxjnl-2021-217629

Figure 2.

Figure 2

Validation metrics for 4C Mortality and 4C Deterioration score. Random-effects meta-analysis was performed across NHS regions for each metric. CITL, calibration-in-the-large; NHS, National Health Service.