Fig. 3

Comparisons of microbial amount between groups with and without poor oral health. A Total bacteria. B Streptococci. C Fungi. The bold line in the middle of the box indicates the median. The bottom edge of the box shows the 25th percentile and the top edge the 75th percentile. Whiskers at the bottom and top of the box indicate minimum and maximum values, respectively. Circles above and below the whiskers indicates outliers. *p = 0.028, Mann–Whitney U test