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Table 3 Weighted UniFrac p-values on expanded form of lake sediment data

From: Equivalent input produces different output in the UniFrac significance test

Sample A1 A2 B1 B2 C1 C2
A1   0.07 0.00 0.00 0.00 0.00
A2    0.00 0.00 0.00 0.00
B1     0.00 0.00 0.00
B2      0.00 0.15
C1       0.74
  1. Weighted UniFrac uncorrected p-values between six samples of metagenomic lake sediment data using the expanded form as input. P-values are now much more consistent with the most important aspects of our expectations and other forms of analyses compared to the values in Table 2. For instance, the two downstream samples (A1 and A2) may be similar and are definitely different from all the upstream samples. Although there is a larger chance that B2 is similar to C2 than we might expect, the p-value for C1 and C2 is much higher still, which was not the case in Table 2.