Structchi2
\[D_{Structchi2} = \sqrt{N_T \sum_{j=1}^{S_T} \left ( \frac {1}{S_{+j}} \left ( \frac{S_{Aj}}{S_{A+}} - \frac{S_{Bj}}{S_{B+}} \right )^2 \right ) }\]- where \(N_T\) is the total number of sequences
- where \(S_{A+}\) denotes the total abundance of sample A
- where \(S_{B+}\) denotes the total abundance of sample B
- where \(S_{Aj}\) is the abundance of sample A in the jth OTU.
- where \(S_{Bj}\) is the abundance of sample B in the jth OTU.
- where \(S_{+j}\) denotes the total abundance of OTU j.