Table 4. Number of noninstitutionalized persons 18-64 years of age who are severely disabled, by selected characteristics: United States, 1978.
| Selected characteristic | U.S. population 18-64 years | Severely disabled persons | |
|---|---|---|---|
|
| |||
| Total | SSA disability beneficiaries | ||
| Number in millions | 127.0 | 10.9 | 2.9 |
| Percent 55-64 years | 16.0 | 46.0 | 57.0 |
| Percent male | 49.6 | 43.2 | 65.9 |
| Percent black | 10.6 | 16.8 | 14.0 |
| Median years of school completed | 12 | 10 | 10 |
| Percent below poverty level | 8.1 | 22.1 | 15.8 |
Source: (Social Security Administration, 1978).