One Sample Score Test of a Proportion

Where $g$ is the observed proportion, $e$ is the expected proportion, $n$ is the effective sample size, and $d_{eff}$ is Extra deff:

$z={\frac {g-e}{\sqrt {d_{eff}e(1-e)/n}}}$

where $p\approx 2(1-\Phi (|z|))$ if $|g-e|\geq 0.0001$ and NaN otherwise.