Figure 2.

The percentage of patients with an improvement in IBS symptoms evaluated with the use of the IBS-SSS after probiotic treatment lasting 4 and 8 weeks. The total IBS-SSS score (a) and domain-specific scores related to the severity of pain (b), frequency of pain (c), dissatisfaction with bowel habit (d), severity of flatulence (e), and quality of life were analyzed (f). An improvement was defined as at least a 30% decrease in scores compared with baseline scores. NS = no significance (p > 0.05). Statistical analysis performed with the use of Fisher’s exact test.