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.
Characteristics of the study population.
| Demographic characteristic | All (N=4098), mean (SD; range) | Males (N=1811), mean (SD; range) | Females (N=2287), mean (SD; range) |
| Age (years) | 45.1 (9.6; 19-65) | 45.2 (9.4; 19-65) | 44.9 (9.8; 19-65) |
| Physical activity classa | 4.8 (1.8; 0-10) | 4.9 (1.7; 0-10) | 4.8 (1.8; 0-10) |
| Body mass index (kg/m2) | 26.0 (4.0; 18.5-39.9) | 26.7 (3.5; 18.9-39.5) | 25.4 (4.3; 18.5-39.9) |
aPhysical activity class range: 0 (physically inactive) to 10 (physically very active).
