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British scientists have developed a four-level scoring model for predicting the death risk of patients hospitalised with Covid-19, saying it should help doctors quickly decide on the best care for each patient.

The tool, detailed in research published in the BMJ medical journal on Wednesday, helps doctors put patients into one of four Covid risk groups – from low to intermediate, high, or very high risk of death.

With hospitals around the world facing waves of patients with Covid, doctors have said they need quicker and more accurate risk-prediction tools to swiftly identify those patients at highest risk of dying and help get them targeted treatment.

The new model – called the 4C (Coronavirus Clinical Characterisation Consortium) Mortality Score – uses data such as age, sex, underlying conditions, breathing and blood oxygen levels.

READ MORE: Coronavirus scoring system could predict a patient’s death risk