Qat Chewing and Periodontal Pathogens in Health and Disease: Further Evidence for a Prebiotic-Like Effect

Figure 1

Median absolute and relative counts of the test taxa in subgingival biofilm from the qat chewers and nonchewers with healthy periodontium. Significance of difference was sought using ordinal regression adjusting for demographic variables, other oral habits, and mean plaque index. Significant at 0.05. Significant after correcting for multiple comparisons ().