SSB and Fever: It found importance and found some indices such as urinary NAG enzyme level, sex, arthralgia, BUN, edema, fever, SLEDAI and anti-Sjogren syndrome B antibody (SSB) were important variables for AI prediction (Fig. 3a); while urinary NAG enzyme level, age, fever, psilosis, edema, SSB and SLEDAI were important for CI prediction (Fig. 3b).