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.
Data of survey completion.
| Survey completion data | Overall (N=8087) | Morning (n=1400) | Midday (n=5287) | Evening (n=1400) |
| Surveys completed, n (%) | 7082 (87.6) | 1232 (88.0) | 4629 (87.6) | 1221 (87.2) |
| Duration (min) (excluding cognitive tests), mean (SD) | 2.9 (3.1) | 3 (2.8) | 2.4 (3.1) | 4.5 (2.8) |
