The original version of this report contained errors in Table 5.H1. Some of the values for “Disabled-worker families” comprising a worker, wife, and either 1 child or 2 or more children were incorrect for 2004 and 2006. The corrected values now appear in this report.

The original print and web versions of this report contained an error in Table 6.B1. Data shown for columns “One-half or more of entitlement months” and “Less than one-half of entitlement months” were incorrectly transposed. Corrected data now appear in the web versions of this report.

The original print and web versions of this report contained an error in Table 3.E3. Footnote e, reading “Less than 0.05 percent,” was incorrect. The corrected footnote, “Less than 0.5 percent,” now appears in the web versions of this report.

The original print and Web versions of this report contained errors in Table 2.A16. For December 1994, the values given for the three highest AMW brackets (“next 175,” “next 250,” and “next 50,” the three rows shown at the bottom of the column) were incorrect. The correct values are 21.09, 20.56, and 20.00, respectively. These errors have been corrected in the Web versions of this report.

The original print and electronic versions of this report contained the following errors:

• In Table 2.A12, the "amount (dollars)" for the special minimum primary insurance amount (PIA) for 1981 was incorrect. The correct value is 5,550.
• In Table 8.B1, the number of "persons served per 1000 enrollees, Hospital Insurance, Inpatient hospital" for 1990 was incorrect. The correct value is 194.

The original print and electronic versions of this report contained the following errors:

• In Table 5.J4, data for Vermont and Virginia were transposed.
• In Table 5.J5, data for individuals aged 90–99 and aged 100 or older in Montana were omitted.
• In Table 8.H1, data for Alabama, Alaska, Arizona, Arkansas, Delaware, the District of Columbia, Idaho, Illinois, Indiana, Iowa, Maine, Massachusetts, Mississippi, Missouri, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Vermont, Virginia, West Virginia, and Wisconsin were incorrect.

The original print and electronic versions of this report contained errors in Table 5.F7. The following information has been corrected in the electronic version of this report:

• The number of “Widowed mothers and fathers” for the “primary insurance amount” rows of “Less than 300.00” and “300.00–349.90” have been replaced.
• All the data in the “Number” column for “Nondisabled widow(er)s” have been replaced.
• All the data in the “Number” column for “Disabled widow(er)s” have been replaced. In addition, “Disabled widow(er)s” percentages for the “primary insurance amount” rows of “700.00–749.90,” “1,500.00–1,549.90,” “1,650–1,699.90,” and “1,700 or more” have been replaced.
• The number of “Children” for the “primary insurance amount” rows of “Less than 300.00” and “300.00–349.90” have been replaced. In addition, the percentage for the “primary insurance amount” row of “Less than 300.00” for “Children” has been replaced.

The original electronic version of this report contained an error in Table 3.C3—The Hospital Insurance tax amounts for the total, employer, and employee contributions for 2005 were incorrect; the correct data are 182,565 (total hospital insurance amount), 80,159 (employer hospital insurance amount), and 80,159 (employee hospital insurance amount). These errors were detected prior to print publication and have been corrected in the electronic version of this report.