The Effects of Cluster Level Group Assignment on SPO2 Values

The SPO2. values are lower in the lower target group compared to the intermediate higher target groups and that that separation occurs almost immediately. So very early intervention facilitated by the cluster level group assignment. Among those 2,541 mechanically validated critically ill patients, with that separation between groups in the SPO2 and FiO2 received, what was the primary outcome like in the 3 groups?