Table 2. Control–case differences in Shannon index and number of unique species-level operational taxonomic units (OTUs) in the fecal samples of 13 twin pairs, discordant for Hodgkin lymphoma.
Twin pairs | Zygosity | Difference in Shannon indexa | Difference in number of unique OTUsa |
---|---|---|---|
1 | DZ | 0.92 | 71.7 |
2 | DZ | 1.68 | 66.3 |
3 | DZ | −0.17 | −5.2 |
4 | DZ | −0.31 | −4.1 |
5 | DZ | 0.49 | 37.1 |
6 | DZ | −0.72 | −51.5 |
7 | DZ | 0.93 | 48.5 |
8 | DZ | −0.12 | 34.9 |
9 | MZ | −0.36 | 34.6 |
10 | MZ | −0.09 | −10.6 |
11 | MZ | 0.08 | 80.7 |
12 | MZ | 0.15 | 67.4 |
13 | MZ | 0.25 | 26.8 |
Mean within-pair differenceb | 0.48 | 41.5 | |
Mean between-pair differencec | 0.75 | 77.2 | |
P-valued | 0.02 | 0.0004 |
Abbreviations: DZ=dizygotic; MZ=monozygotic.
Control value−case value.
Mean of absolute differences within twin pairs.
Estimated mean of the absolute difference between values from two members chosen at random from different twin sets.
Analysis of variance to test whether values are more similar within vs between twin pairs.