Alternative Equation Formats

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MathML

\begin{aligned} n_{00} & = # {control=failure, case=failure} \\ n_{01} & = # {control=failure, case=success} \\ n_{10} & = # {control=success, case=failure} \\ n_{11} & = # {control=success, case=success} \\ N & = n_{00} + n_{01} + n_{10} + n_{11} \\ n_{D} & = n_{01} + n_{10} \equiv # discordant pairs \\ {\hat{π}}_{i j} & = \frac{n_{i j}}{N} \\ π_{i j} & = theoretical population value of {\hat{π}}_{i j} \\ π_{1 \cdot} & = π_{10} + π_{11} \\ π_{\cdot 1} & = π_{01} + π_{11} \\ ϕ & = C o r r (control observation, case observation) (within a pair) \\ D P R & = "discordant proportion ratio" = \frac{π_{01}}{π_{10}} \\ {D P R}_{0} & = null DPR \end{aligned}

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Math as LaTeX Source

\begin{align*} n_{00} & = \# \{ \mbox{control=failure, case=failure}\} \\ n_{01} & = \# \{ \mbox{control=failure, case=success}\} \\ n_{10} & = \# \{ \mbox{control=success, case=failure}\} \\ n_{11} & = \# \{ \mbox{control=success, case=success}\} \\ N & = n_{00} + n_{01} + n_{10} + n_{11} \\ n_ D & = n_{01} + n_{10} \equiv \# \mbox{discordant pairs} \\ \hat{\pi }_{ij} & = \frac{n_{ij}}{N} \\ \pi _{ij} & = \mbox{theoretical population value of } \hat{\pi }_{ij} \\ \pi _{1 \cdot } & = \pi _{10} + \pi _{11} \\ \pi _{\cdot 1} & = \pi _{01} + \pi _{11} \\ \phi & = \mr{Corr} (\mbox{control observation}, \mbox{case observation}) \quad \mbox{(within a pair)} \\ \mr{DPR} & = \mbox{"discordant proportion ratio"} = \frac{\pi _{01}}{\pi _{10}} \\ \mr{DPR}_0 & = \mbox{null DPR} \\ \end{align*}