Some of the data used to identify which group a person falls into—and, therefore, their risk of dying—included age, sex, the number of pre-existing conditions, respiratory rate on admission, and the results of two blood tests.
One in every hundred patients in the low-risk group was found to be at risk of dying. It was 10 in a hundred patients in the intermediate-risk group, 31 in a hundred in the high-risk group and 62 in a hundred in the very high-risk group.