Figure 2

Analysis group. Thirty-five persons who volunteered to participate in the study were interviewed and all were enrolled, because none matched any of the exclusion criteria. Eight of them dropped out during the study, and, from those who completed the study, 23 (10 males and 13 females, mean age 16.2 ± 10.5 years) were selected as an analysis group by excluding 2 with defects in diary entries and 2 in whom the number of days with test capsule consumption was insufficient according to a premeditated procedure. The fecal microflora was analyzed in 20 subjects of the analysis group in whom data could be obtained in all periods.