Pick one ratio from the income statement below- briefly explain what it means, how it's calculated! (CAN NOT BE GROSS-PROFIT REVENUE RATIO)

Shands Teaching Hospital and Clinics, Inc. and Subsidiaries Consolidated Statements of Operations and Changes in Net Assets Years Ended June 30, 2009 and 2008 (in thousands of dollars) 2009 2008 Unrestricted revenues and other support Net patient service revenue Capitation revenue Investment income Other revenue $1,536,324 $ 1,410,950 64,046 42,438 161,823 1,679 257 33,416 18,473 147,132 Total unrestricted revenues and other support 1735,345 Expenses Salaries, wages and benefits Supplies and other Interest Depreciation and amortization Provision for bad debts 714,196 659,337 14,836 76,773 173,395 1,638,537 96,808 1,205 708,220 664,091 15,749 77,020 139,793 1,604,873 74,384 (76) Total expenses Operating income Nonoperating gains (losses), net Expenditures in support of the University of Florida and ts medical programs Losses, reclassifications, and change in fair value (64,124) (59,309) (16,913) 27,247 71,922 27,699)$ of derivative instruments (1,273) Gains (losses) from early extinguishment of long-term debt, net Impairment and restructuring charges (5,625) 1,661 (Deficiency) excess of revenues over expenses 6,440