Error in equation 1 Daniel Bratton, MRC 4 March 2015 There is an error in equation 1 (sample size formula for control arm). The first set of brackets should be squared, i.e. (z_{1-\alpha_i}+z_{\omega_i})^2 Competing interests None declared
Error in equation 1
4 March 2015
There is an error in equation 1 (sample size formula for control arm). The first set of brackets should be squared, i.e. (z_{1-\alpha_i}+z_{\omega_i})^2
Competing interests
None declared