Carbon dioxide combining power as a predictor of unplanned ICU transfer in hospital wards: a retrospective cohort study.

Correlation and consistency analysis Linear regression showed a strong linear correlation between CO2CP and base excess (BE) (R 2 = 0.78, P < 0.001, Figure 5A ), with a standard estimation error Sy.x = 4.4 mmol/L, indicating a reliable trend in the population, but individual estimation still needs to refer to blood gas results ( Figure 5B ).

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