The use of p-values with a research design like you are describing worries me: 'The garden of forking paths: Why multiple comparisons can be a problem, even wh

The use of p-values with a research design like you are describing worries me: 'The garden of forking paths: Why multiple comparisons can be a problem, even when there is no \shing expedition" or "p-hacking" and the research hypothesis was posited ahead of time' http://www.stat.columbia.edu/~gelman/research/unpublished/p_hacking.pdf http://www.stat.columbia.edu/~gelman/research/unpublished/p_...