Table 2 Independent tests between PD and HCs (significant test results are printed in bold).

From: Gut bacterial tyrosine decarboxylase associates with clinical variables in a longitudinal cohort study of Parkinsons disease

 

Independent tests (PD–control)

 

Baseline

Follow-up

 

Mean difference

PD mean ± SD (n)

Control mean ± SD (n)

T test

Mann–Whitney

Fisher’s test

FDR

Mean difference

PD mean ± SD (n)

Control mean ± SD (n)

T test

Mann–Whitney

Fisher’s test

FDR

tdc-gene abundance

tdc-gene abundance (outliers removed)

−7.4E−07

1.5E−6 ± 1.3E−6 (55)

2.2E−6 ± 2.2E−6 (54)

 

0.177

 

n.a.

6.47E−07

3.8E−6 ± 2.6E−6 (57)

3.1E−6 ± 2.7E−6 (55)

 

0.057

 

n.a.

Gastrointestinal symptoms

 Wexner total score

2.73

5.66 ± 4.01 (67)

2.92 ± 2.61 (65)

 

2.4E−05

 

2.4E−05

3.99

6.37 ± 4.63 (67)

2.38 ± 2.58 (65)

 

5.9E−09

 

1.2E−08

 Rome III (constipation and defecation)

4.40

7.37 ± 5.96 (67)

2.97 ± 3.60 (65)

 

1.2E−06

 

2.4E−06

4.60

7.36 ± 5.17 (67)

2.75 ± 3.60 (65)

 

1.3E−08

 

1.3E−08

Medication

 Use of anacidic (yes/no)

−2%

6/61 (67)

7/58(65)

  

0.777

0.777

6%

4/63 (67)

0/65 (65)

  

0.119

0.238

 Use of anticholinergic (yes/no)

9%

6/61 (67)

0/65 (65)

  

0.028

0.056

3%

3/64 (67)

1/64 (65)

  

0.619

0.619

  1. Unpaired T test for normally distributed unpaired data, unpaired Mann–Whitney test for non-normally distributed unpaired data, and Fisher’s test for binary distributed unpaired data. The p values were corrected for false discovery rate (FDR) per section.
  2. n.a. not applicable.