Fig. 4

The distribution of the Dysbiosis Index (DI) score among patients with ankylosing spondylitis (AS, n = 150), patients with ulcerative colitis (UC, n = 18), and healthy controls (HC, n = 17). Fecal samples were analyzed by the GA-map™ Dysbiosis Test. DI is scored between 1 and 5, where a score of 1 and 2 signifies normobiosis and 3–5 dysbiosis of increasing severity. Digits inside the columns represent the number of subjects within each column