Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Socio-demographic variables of age, sex and social class for each age group
| Age groups | ||
|---|---|---|
| Variable | 55-70 yrs | 70-87 yrs |
| N | 188 | 199 |
| Mean (SD) age in years | 61.8 (4.4) | 74.3 (3.7) |
| Sex (%) | ||
| Male | 49.5 | 51.8 |
| Female | 50.5 | 48.2 |
| Social class (%) | ||
| Professional | 43.2 | 33.2 |
| Skilled | 48.1 | 55.8 |
| Semi-unskilled | 8.7 | 11.1 |
