Table S4.

Treatment effect estimates for study 2 voting preferences

Predictor variablePresearch votePostsearch vote
CoefficientSECoefficientSE
Intercept−0.0730.5400.0620.543
Sex
 Female0Referent0Referent
 Male0.0390.110−0.1350.119
 Other−0.4300.922−0.5680.924
Race/ethnicity
 White0Referent0Referent
 Black0.1150.2240.0900.245
 Hispanic−0.4350.235−0.2800.237
 Asian0.3660.2380.6680.291*
 Other0.1330.274−0.0720.291
Age group
 18–240Referent0Referent
 25–44−0.0240.144−0.0830.157
 45–640.2410.1840.0290.200
 65+0.2580.4110.6850.519
Education level
 Less than ninth grade0Referent0Referent
 Ninth to 12th grade0.0240.5480.7320.550
 High school graduate0.0740.5280.9270.528
 Bachelors0.0940.5290.8420.530
 Advanced−0.0500.5430.5490.544
  • The presearch and postsearch columns report the estimate and variance for both treatment groups using classical regression poststratification. Data for sex, race/ethnicity, age group, and education level came from the 2010 US Census. Data on the number of people who identify their sex as “other” came from a 2011 Gallup study.

  • * P < 0.05.