Skip to main content
. Author manuscript; available in PMC: 2015 Dec 30.
Published in final edited form as: Hum Factors. 2014 Aug;56(5):873–910. doi: 10.1177/0018720813516359

Table 3. Final Sampling Plan, Accounting for Geographic Density of Racial/Ethnic Distributions.

Age Total
Male Female
White Black Hispanic/Other
Data Collection Site 18–32 33–44 45–65 18–32 33–44 45–65 18–32 33–44 45–65 18–32 33–44 45–65
Phoenix, AZ 45 45 45 3 3 3 13 13 13 7 7 7 204
Chicago, IL 52 52 52 6 6 6 3 3 3 7 7 7 204
Rockville, MD 53 53 53 8 8 8 5 5 5 7 7 7 219
Fort Worth, TX 60 60 60 13 13 13 9 9 9 9 9 9 273
Total 630 90 90 90 900