At the end of the intervention , there were no significant differences in the concentrations of bifidobacteria between the groups , after adjusting for baseline values ( oligofructose/inulin @ +@ , placebo @ +@ log@cells/g dry faeces , P > @ ) , but there were significantly lower concentrations of Faecalibacterium prausnitzii ( @ +@ vs. @ +@ log@cells/g , P = @ ) and Bacteroides-Prevotella ( @ +@ vs. @ +@ log@cells/g , P = @ ) in patients receiving additional oligofructose/inulin .