Alternative Equation Formats

$$\begin{array}{rcl}{\stackrel{^<!--\; ^\; -->}{\mathrm{\sigma <!--\; \sigma \; -->}}}^2& =& \stackrel{^<!--\; ^\; -->}{\mathrm{V}\mathrm{a}\mathrm{r}}(\ln <!--\; \; -->({\mathit{O}\mathit{R}}_{\mathit{M}\mathit{H}}))\\ & =& \frac{\underset{h}{\sum <!--\; \sum \; -->}(n_{h11}+n_{h22})(n_{h11}{n}_{h22})/n_h^2}{2{\left(\underset{h}{\sum <!--\; \sum \; -->}{n}_{h11}{n}_{h22}/n_h\right)}^2}\\ & & +\frac{\underset{h}{\sum <!--\; \sum \; -->}[(n_{h11}+n_{h22})(n_{h12}{n}_{h21})+(n_{h12}+n_{h21})(n_{h11}{n}_{h22})]/n_h^2}{2\left(\underset{h}{\sum <!--\; \sum \; -->}{n}_{h11}{n}_{h22}/n_h\right)\left(\underset{h}{\sum <!--\; \sum \; -->}{n}_{h12}{n}_{h21}/n_h\right)}\\ & & +\frac{\underset{h}{\sum <!--\; \sum \; -->}(n_{h12}+n_{h21})(n_{h12}{n}_{h21})/n_h^2}{2{\left(\underset{h}{\sum <!--\; \sum \; -->}{n}_{h12}{n}_{h21}/n_h\right)}^2}\end{array}$$

$$\begin{array}{rcl}{\stackrel{^<!--\; ^\; -->}{\mathrm{\sigma <!--\; \sigma \; -->}}}^2& =& \stackrel{^<!--\; ^\; -->}{\mathrm{V}\mathrm{a}\mathrm{r}}(\ln <!--\; \; -->({\mathit{O}\mathit{R}}_{\mathit{M}\mathit{H}}))\\ & =& \frac{\underset{h}{\sum <!--\; \sum \; -->}(n_{h11}+n_{h22})(n_{h11}{n}_{h22})/n_h^2}{2{\left(\underset{h}{\sum <!--\; \sum \; -->}{n}_{h11}{n}_{h22}/n_h\right)}^2}\\ & & +\frac{\underset{h}{\sum <!--\; \sum \; -->}[(n_{h11}+n_{h22})(n_{h12}{n}_{h21})+(n_{h12}+n_{h21})(n_{h11}{n}_{h22})]/n_h^2}{2\left(\underset{h}{\sum <!--\; \sum \; -->}{n}_{h11}{n}_{h22}/n_h\right)\left(\underset{h}{\sum <!--\; \sum \; -->}{n}_{h12}{n}_{h21}/n_h\right)}\\ & & +\frac{\underset{h}{\sum <!--\; \sum \; -->}(n_{h12}+n_{h21})(n_{h12}{n}_{h21})/n_h^2}{2{\left(\underset{h}{\sum <!--\; \sum \; -->}{n}_{h12}{n}_{h21}/n_h\right)}^2}\end{array}$$

\begin{eqnarray*} \hat{\sigma }^2 & = & \widehat{\mr{Var}}(~ \ln (\mathit{OR}_{\mi{MH}})~ ) \\[0.10in]& = & \frac{\sum _ h (n_{h11} + n_{h22}) (n_{h11} ~ n_{h22}) / n_ h^2}{2 \left( \sum _ h n_{h11} ~ n_{h22} / n_ h \right)^2} \\[0.10in]& & + ~ \frac{\sum _ h [ (n_{h11} + n_{h22})(n_{h12} ~ n_{h21}) + (n_{h12} + n_{h21})(n_{h11} ~ n_{h22}) ] / n_ h^2}{2 \left( \sum _ h n_{h11} ~ n_{h22} / n_ h \right) \left( \sum _ h n_{h12} ~ n_{h21} / n_ h \right)} \\[0.10in]& & + ~ \frac{\sum _ h (n_{h12} + n_{h21}) (n_{h12} ~ n_{h21}) / n_ h^2}{2 \left( \sum _ h n_{h12} ~ n_{h21} / n_ h \right)^2} \end{eqnarray*}