TABLE 3.
Random forest classification of microbiota by host variables
| Classifier | Anatomical site |
Classification errora
(%) (avg ± SD) |
Baseline/OOBb |
|---|---|---|---|
| Host family | Gut | 52 ± 35 | 3.74 |
| Oral | 16 ± 20 | 7.69 | |
| Skin | 40 ± 43 | 5.01 | |
| Host genus | Gut | 68 ± 36 | 3.05 |
| Oral | 45 ± 45 | 5.69 | |
| Skin | 59 ± 45 | 4.56 | |
| Host species | Gut | 65 ± 36 | 2.64 |
| Oral | 53 ± 40 | 3.64 | |
| Skin | 56 ± 42 | 3.86 | |
| Host locality | Gut | 65 ± 32 | 2.95 |
| Oral | 56 ± 35 | 3.61 | |
| Skin | 35 ± 37 | 9.01 | |
| Host diet | Gut | 13 ± 16 | 3.95 |
| Oral | 4 ± 02 | 6.73 | |
| Skin | 4 ± 05 | 9.67 | |
a
Classification error is estimated as the ratio of incorrect classification occurrence to total classifications; values closer to 0% indicate lower error rate.
b
The ratio of baseline error to out-of-bag (OOB) estimated error with 1,000 bootstrap replicates is shown.