Synbiotic group

(n = 29)

Placebo group

(n = 31)

P-value

(Chi-2)

Age

<30 years

>30 years

8

21

6

25

0.451

Career (n)

Nurse

Physician

Nurse aid

18

10

1

23

4

4

0.101

Risk factors:

Hypertension, Diabetes mellitus

Hypothyroidism

5

4

0.393