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.
Average interview length in minutes by data collection wave, interview type and overall.
| Average survey time (minutes) | Pilot | Wave 1 | Wave 2 | Total sample |
|---|---|---|---|---|
| Short interview | 63.2 | 58.2 | 64.5 | 62.3 |
| Long interview | 90.3 | 84.8 | 94.0 | 91.0 |
| Overall (short/long) | 78.8 | 70.9 | 79.4 | 76.7 |
