“Burden of proof” means the burden of persuasion by the preponderance of the evidence. “Commission” means the Health Services Cost Review Commission. “Executive Director” means the Executive Director of the Commission, or in his absence, the Commission staff member designated to act in his stead. “Opinion” means a written statement setting forth the reasons and grounds why the writer of the statement believes that certain actions should be taken or decisions or recommendations made. “Order Nisi” means an order of the Commission that certain actions shall be taken or that certain matters are approved as of a future date, thereby permitting parties affected by the Order Nisi to make any objections they may have known to the Commission. Partial Rate Application. “Partial rate application” means a request by a hospital for the amendment or establishment of a single approved rate. “Partial rate application” includes, but is not limited to, those requests enumerated in Regulation .03B(4) of this chapter. “Publish” means the insertion of a public notice concerning proposed actions, including but not limited to public hearings, in a newspaper or newspapers in general circulation in the community in which the hospital affected is located, and, if the public notice relates to a public hearing, in the Maryland Register at least 15 days before the date of the public hearing. “Rate application” and “application” mean a hospital application for rate approval, to be submitted as specified in these regulations. “Recommendation” means a written statement from the Commission's staff to the Commission, advocating a resolution of issues or approval, disapproval, or modification of certain hospital rates and procedures for evaluating the rates. “Regression analysis” means a statistical technique used to measure and control for the effect of selected independent variables (for example, percentage of Medicaid revenue) on one dependent variable (for example, bad debts). “Uncompensated care” means care provided for which compensation is not received (that is, any combination of bad debts and charity care), and as more fully described in the Commission's Accounting and Budget Manual for Fiscal and Operating Management which is incorporated by reference at COMAR 10.37.01.02. “Value of the substantial, available, and affordable coverage (SAAC) differential” means the difference between the amount paid out by SAAC-approved nonprofit health service plans, health insurers, and health maintenance organizations on behalf of SAAC enrollees to hospitals, and what they would have paid to hospitals absent the differential.