Table 1.

Summary of survey designs implemented by the nine cancer centers

Survey site	Probability methods	Non-Probability	Sample Size (N)	Response Rate (%)
UC San Diego Health Moores Cancer Center	ABS mail survey with two sampling frames: one including all residences in San Diego County and another focused on zip codes along the US-Mexican border. Sampling frames provided by Marketing Systems Group.	N/A	720	14.4%
Fred Hutch/UW Cancer Consortium	ABS mail survey: stratified random sample representative of the Western Washington catchment area’s demographics (race/ethnicity, urban/rural), stratified by county groupings based on being more urban or more rural. Sampling frames provided by Data Axle.	N/A	1052	3.6%
O’Neal Comprehensive Cancer Center at UAB	ABS mail survey with sampling frames provided by Caldwell List Company designed to provide a probability sample representative of Alabama’s demographics (race/ethnicity, sex). Double sampling of 34 of 67 counties where cancer incidence is higher than state averages.	N/A	768	15.2%
University of Michigan Rogel Cancer Center	Simple random sample (n=501) of adults via landlines and cell numbers from 40 counties in Michigan obtained from SSI, with oversampling of African Americans.	Convenience sample 1* (n=1122) from SSI panel from 40 counties in Michigan, with oversampling of African American to comprise 20% of sample. Convenience sample 2* (n=206) from community intercepts with relatively high proportions of Middle Eastern and North African populations in 3 Michigan counties.	1829	9.0%
The University of Kansas Cancer Center	Stratified random sample via mail from three health systems and simple random sample from one health system files	Convenience sample	1364	17.1%
Masonic Cancer Center at the University of Minnesota	ABS mail survey with sampling frames provided by SSI to produce a random sample for the state of Minnesota stratified by region of state	N/A	717	47.0%
Sidney Kimmel Cancer Center – Jefferson Health	Simple random sample from 3 sources: a survey of their catchment area in southeastern Pennsylvania via email, a SurveyGizmo standing panel in Pennsylvania and another in New Jersey.	N/A	1557	*
Huntsman Cancer Institute at the University of Utah	ABS mail survey using sampling frames provided by Utah Population Database designed to produce a simple random sample for Utah, stratified by rurality with oversampling of more rural counties	N/A	1196	24.0%
VCU Massey Cancer Center	ABS mail survey of their catchment area in Central, Eastern, and Southern Virginia. Sampling frames provided by Marketing Systems Group.	N/A	895	17.0%

ABS= Address-based sampling; SSI= Survey Sampling International; UC=University of California; UW=University of Washington; UAB=University of Alabama Birmingham; VCU=Virginia Commonwealth University

^*Data unavailable to calculate the response rate (incomplete denominator data)