Notes
1. Percent increase in year indicated over previous year.
2. This column may differ slightly from the last column of tableIV.A1, since tableIV.A1 includes all persons eligible for HI protection while this table excludes noninsured persons.
3. Costs attributable to insured beneficiaries only, on an incurred basis. Benefits and administrative costs for noninsured persons are expected to be financed through general revenue transfers and premium payments, rather than through payroll taxes.
4. Includes costs of Quality Improvement Organizations.
5. The ratio of the increase in HI costs to the increase in taxable payroll. This ratio is equivalent to the percent increase in the ratio of HI expenditures to taxable payroll (the cost rate).
6. Includes the declining share of costs drawn from HI for coverage of certain home health services transferred from HI to SMI Part B.

