Table 4. Comparison of the mean distances between samples observed in the presence/absence (Jaccard) or relative abundance (Yue and Clayton) NMDS plots using matched pairs t-tests.
Basis of comparison | P value of sample comparison | ||
−1m vs −1w | −1m vs LS | −1w vs LS | |
Jaccard | 0.65 | 0.12 | 0.85 |
Yue and Clayton | 0.11 | 0.22 | 0.06 |
For subjects who underwent colonoscopy: −1m, −1w, sample obtained one month, one week pre-colonoscopy, +1w, +1m, +3m, sample obtained 1 week, one month, or 3–6 months post-colonoscopy, respectively. For subjects who did not undergo colonoscopy: +3m, sample obtained 3–6 months after the first sample. Figure 5 outlines the sample comparisons for each test. P = <0.05.