Table 4.
Summary of Mann–Whitney U tests on the Firmicutes: Bacteroidetes ratio across ASD and TD groups.
| Variable | Mean ± SD | Statistical comparison | |||
|---|---|---|---|---|---|
| ASD | TD | Statistics | p | Effect size | |
| Firmicutes: Bacteroidetes Ratio | 10.9 (30) | 5.78 (9.65) | U = 3922 | 0.003 | 0.239 |
| Mean ± SD | Statistical Comparison | ||||
| ASD FGID− | TD FGID− | Statistics | p | Effect size | |
| 7.62 (14.5) | 4.9 (8.12) | U = 2002 | 0.049 | 0.193 | |
| Mean ± SD | Statistical Comparison | ||||
| ASD FGID+ | TD FGID+ | Statistics | p | Effect size | |
| 17.7 (48) | 7.98 (12.6) | U = 327 | 0.031 | 0.319 | |
| Mean ± SD | Statistical Comparison | ||||
| ASD FGID+ | ASD FGID− | Statistics | p | Effect size | |
| 17.7 (48) | 7.62 (14.5) | U = 691 | 0.047 | 0.257 | |
| Mean ± SD | Statistical Comparison | ||||
| TD FGID+ | TD FGID− | Statistics | p | Effect size | |
| 7.98 (12.6) | 4.9 (8.12) | U = 1125 | 0.320 | 0.121 | |
Significant values are in bold.
ASD Autism Spectrum Disorder, TD Typically Developing, FGID Functional Gastrointestinal Disorder. Effect sizes were calculated with rank biserial correlation.