Table 1

 Overall prevalence of infections in active and inactive AS and uSpA and relative prevalence according to the type of infection*

Ankylosing spondylitis (n = 52)Undifferentiated spondyloarthropathy (n = 32)
Group A (n = 22)Group B (n = 30)p ValueGroup A (n = 14)Group B (n = 18)p Value
No (%)No (%)No (%)No (%)
*See text for data on ReA and psoriatic arthritis; †relative prevalence.
With infection18 (82)8 (27)<0.0019 (64)9 (50)0.653
Type of infection
Intestinal9 (50)2 (25)0.0055 (56)1 (11)0.064
Upper respiratory tract7 (39)2 (25)0.0273 (33)5 (56)1.000
Genitourinary tract2 (11)4 (50)1.0001 (11)3 (33)0.613