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Table 2 Summary statistics used in tests of demographic neutrality and tree balance

From: Phylodynamic reconstruction of the spatiotemporal transmission and demographic history of coxsackievirus B2

Gene region Statistical measures Mean Median 95 % HPDa
VP1 D b -2.9149 -2.933 -3.5863, -2.1837
  B 1 c 24.9094 24.9591 22.9639, 26.9044
  Cn d 15.7291 16 14, 18
  Ic d 0.1969 0.1902 0.1682, 0.2384
3D D -2.1294 -2.1457 -2.818, -1.4114
  B 1 16.7549 16.6385 15.5468, 18.0199
  Cn 11.0685 11 10, 12
  Ic 0.238 0.2386 0.1875, 0.2822
  1. aHPD Highest posterior density
  2. b D Fu and Li’s D: Normalized difference between the external branch lengths and total tree length. This is a classic summary statistic used for testing neutrality
  3. c B 1 Maximum number of nodes between an internal node and the tips of the tree. A larger value indicates a more balanced tree
  4. d Cn Cherry count, the number of internal nodes with exactly two terminal branches. A larger number indicates a more balanced tree
  5. e Ic Colless’s tree imbalance index with a range of [0, 1]. A larger number indicates a more imbalanced tree