Where \(g_1\) and \(g_2\) are the two proportions and \(\sigma_{g_1}\) and \(\sigma_{g_2}\) are their standard errors:
\[\begin{align} z=\frac{g_1-g_2}{\sqrt{\sigma^2_{g_1} + \sigma^2_{g_1}}} \end{align},\]
where \(p = 2(1-\Phi(|z|))\).
Where \(g_1\) and \(g_2\) are the two proportions and \(\sigma_{g_1}\) and \(\sigma_{g_2}\) are their standard errors:
\[\begin{align} z=\frac{g_1-g_2}{\sqrt{\sigma^2_{g_1} + \sigma^2_{g_1}}} \end{align},\]
where \(p = 2(1-\Phi(|z|))\).