=+4.27 ● Example 4.9 gave 2002 cost-to-charge ratios for inpatient services at 31 hospitals in Oregon. The same data source also provided the cost-to-charge ratios for outpatient services at these same 31 hospitals:

75 54 50 75 58 56 56 62 66 69 100 57 45 51 53 45 84 45 48 39 51 51 65 100 63 96 54 53 67 52 71