Subjects with CKD 5 will have a decreased risk of adverse effects, due to the lack of any need for blood draws. Additionally, the time spent performing study questionnaires or engaging with the web-based module (via wireless-enabled laptop) will be during the 3-4 hour dialysis treatment, and so will not prolong their visit length. Subjects with CKD 3 and 4 will not be affected by the changes.