PRRI July 2018 LGBT Survey

Data Archive > U.S. Surveys > General Population > National > Public Religion Research Institute > Summary

Vandermaas-Peeler, A., Cox, D., Najle, M. B., & Fisch-Friedman, M. (2021, September 15). PRRI July 2018 LGBT Survey.
The Public Religion Research Institute (PRRI) July 2018 LGBT survey asks Americans about their views on issues specific to the LGBT community, including support for same-sex marriage, laws against discrimination of LGBT people, service refusals by business owners on religious grounds, and more. Other questions examine respondents' religious habits and their experience with LGBT issues in their places of faith.
Data File
Cases: 2,008
Variables: 94
Weight Variable: WEIGHT
The weighting is accomplished in two separate stages. The first stage of weighting corrects for different probabilities of selection associated with the number of adults in each household and each respondent's telephone usage patterns. In the second stage, sample demographics are balanced to match target population parameters for gender, age, education, race and Hispanic ethnicity, region (U.S. Census definitions), population density and telephone usage. The population density parameter was derived from Census 2010 data. The telephone usage parameter came from an analysis of the 2017 National Health Interview Survey. All other weighting parameters are derived from an analysis of the U.S. Census Bureau's May 2016 Current Population Survey.

The sample weighting is accomplished using an iterative proportional fitting (IFP) process that simultaneously balances the distributions of all variables. Weights were trimmed to prevent individual interviews from having too much influence on the final results. The use of these weights in statistical analysis ensures that the demographic characteristics of the sample closely approximate the demographic characteristics of the target populations.
Data Collection
Date Collected: June 27 - July 8, 2018
Original Survey (Instrument)
PRRI July 2018 Survey
Funded By
The survey was made possible by generous grants from the Arcus Foundation and the E. Rhodes and Leona B. Carpenter Foundation.
Collection Procedures
Data collection is based on stratified, single-stage, random-digit-dialing (RDD) sample of landline telephone households and randomly generated cell phone numbers. The sample is designed to represent the total U.S. adult population and includes respondents from all 50 states, including Hawaii and Alaska. The landline and cell phone samples are provided by Marketing Systems Group.
Sampling Procedures
The survey was designed and conducted by PRRI. Results of the survey were based on bilingual (Spanish and English) RDD telephone interviews conducted between June 27, 2018, and July 8, 2018, by professional interviewers under the direction of SSRS. Interviews were conducted among a random sample of 2,008 adults 18 years of age or older living in the United States (1,203 respondents were interviewed on a cell phone). The selection of respondents within households was accomplished by randomly requesting to speak with the youngest adult male or female currently living in the household.

The margin of error for the survey is +/- 2.6 percentage points at the 95 percent level of confidence. The design effect for the survey is 1.4. In addition to sampling error, surveys may also be subject to error or bias due to question wording, context and order effects.
Principal Investigators
Alex Vandermaas-Peeler, Daniel Cox, Maxine Najle, PhD, and Molly Fisch-Friedman
Related Publications
Wedding Cakes, Same-Sex Marriage, and the Future of LGBT Rights in America
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