Brajendra C. Sutradhar, Roy F. Bartlett, A Small and Large Sample Comparison of Wald's Likelihood Ratio and Rao's Tests for Testing Linear Regression with Autocorrelated Errors, Sankhyā: The Indian ...

A simple approximate formula for sample sizes for detecting a linear trend in proportions is derived. The formulas for both the uncorrected and corrected Cochran-Armitage test are given.