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. Author manuscript; available in PMC: 2017 Sep 7.
Published in final edited form as: J Surv Stat Methodol. 2015 Mar 19;3(1):43–66. doi: 10.1093/jssam/smu023

Table 4.

Study A (Directs First): Placebo Test I

β^
 SE p-value n
Nuclear Power 1.054 0.095 0.568 328
Public Transportation 0.790 0.091 0.021 269
Spanish-speaking 0.848 0.279 0.585   51
Muslim Teachers 1.008 0.237 0.973   55
CNN 0.696 0.143 0.034 222