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Table 3 The effect of probiotic treatment on the number, duration, severity and combined load of lower respiratory symptoms

From: Lactobacillus fermentum (PCC®) supplementation and gastrointestinal and respiratory-tract illness symptoms: a randomised control trial in athletes

   

Effect of probiotic

relative to placebo

(mean; 99% CI)

 
 

Probiotic

group

(mean ± SD)

Placebo

group

(mean ± SD)

Ratio

Difference

Qualitative

inference

Males

Number of episodes

0.6 ± 0.9

1.0 ± 1.5

0.55;

0.15 to 1.60

 

Likely ↓

Duration (d)

3.5 ± 6.6

7.4 ± 10.3

0.47;

0.10 to 1.43

 

Likely ↓

Severity (1-3 scale)

1.23 ± 0.36

1.65 ± 0.57

 

-0.43

-0.92 to 0.08

Possible ↓

Symptom Load

(severity-days)

4.0 ± 7.2

13.0 ± 19.0

0.31;

0.07 to 0.96

 

Very likely ↓

Females

Number of episodes

1.6 ± 2.1

0.5 ± 0.8

3.27;

0.82 to 21

 

Likely ↑

Duration (d)

12.2 ± 14.8

5.1 ± 14.7

2.39;

0.45 to 43

 

Likely ↑

Severity (1-3 scale)

1.38 ± 0.45

2.07 ± 0.77

 

-0.69

-1.57 to 0.10

Possible ↓

Symptom Load

(severity-days)

17.1 ± 19.0

7.9 ± 20.7

2.18;

0.41 to 27.23

 

Likely ↑

  1. SD, standard deviation; CI, confidence interval.
  2. Smallest clinically important values for assessing effects qualitatively: ratios, ×/÷1.20; differences, ± 0.5.