Sustained low disease activity measured by ASDAS slow radiographic spinal progression in axial spondyloarthritis patients treated with TNF-inhibitors: data from REGISPONSERBIO

Table 2 Disease activity differences between patients under long-term TNFi treatment with and without radiographic progression

Results derived from a mixed-effect linear model with no other covariates (univariable analysis) or including potential confounders factors collected at time of recruitment (multivariable analysis): length of the radiographic interval, gender, age, smoking habit, radiographic sacroiliitis, mSASSS average, presence of syndemosphytes, HLAB27, and time from symptomatology onset. Statistical significance was assessed using Wald tests derived from the model. SE, standard error; p, p-value; CRP, C-reactive protein; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; ASDAS-CRP, Ankylosing Spondylitis Disease Activity

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