 This is true both for individuals and the system itself since patients with complications due to DDI will likely re-enter the system at a costlier level.
<fluency>  This is true both for individuals and the system itself since patients with complications due to DDI will likely re-enter the system at a costlier level.
 This is true both for individuals and the system itself since patients with complications due to DDI are likely to re-enter the system at a costlier level.