EXHIBIT 12 COLUMBIA/HCA HEALTHCARE CORPORATION COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES FOR THE QUARTERS ENDED MARCH 31, 1998 AND 1997 (DOLLARS IN MILLIONS) 1998 1997 ---- ---- EARNINGS: Income from continuing operations before minority interests and income taxes.................................................... $401 $807 Fixed charges, excluding capitalized interest.................... 188 146 ---- ---- $589 $953 ==== ==== FIXED CHARGES: Interest charged to expense...................................... $153 $113 Interest portion of rental expense and amortization of deferred loan costs...................................................... 35 33 ---- ---- Fixed charges, excluding capitalized interest.................... 188 146 Capitalized interest............................................. 4 6 ---- ---- $192 $152 ==== ==== Ratio of earnings to fixed charges............................... 3.07 6.28 ==== ==== 23