Thank you, PG. The binomial test seems to be testing the difference in row proportions for each race level. (For example, the race level "White" has 3,354 cases in center=0 and 93 cases in center=1, so the binomial test is testing the difference between 97.3% and 2.7%.) Instead, I'd like to test the difference in column proportions. Among all center cases, 8.3% are white. Among all non-center cases, 18.6% are white. This is the difference I'd like to test. Thanks for your help.
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