Fig. 2
From: Reinforcement learning assisted oxygen therapy for COVID-19 patients under intensive care
A Comparison of the estimated 7-days mortality rates (y-axis) varying with the difference between the oxygen flow rate recommended by the RL optimal policy and that administered by doctors (x-axis) averaged over all time points per patient. The shaded area represents the 95% confidence interval. The smallest oxygen difference is mainly associated with the lowest 7-days mortality rates. The further away the dose received was from the suggested oxygen flow rate, the worse the outcome. B The histogram of oxygen flow rate difference between RL-oxygen and physicians (labels on the vertical axis)