Table 4 Summary of Mann–Whitney U tests on the Firmicutes: Bacteroidetes ratio across ASD and TD groups.

From: Disentangling the relationship of gut microbiota, functional gastrointestinal disorders and autism: a case–control study on prepubertal Chinese boys

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

  1. Significant values are in bold.
  2. ASD Autism Spectrum Disorder, TD Typically Developing, FGID Functional Gastrointestinal Disorder. Effect sizes were calculated with rank biserial correlation.
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