Factors Associated With Initiation of Biologics in Patients With Axial Spondyloarthritis in an Urban Asian City: A PRESPOND Study

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Abstract

Objective

The aim of this study was to examine if patients' sociodemographic, clinical characteristics, and patient-reported outcomes were associated with biologics initiation in patients with axial spondyloarthritis in Singapore.

Methods

Data from a dedicated registry from a tertiary referral center in Singapore from January 2011 to July 2016 were used. Initiation of first biologics was the main outcome of interest. Logistic regression analyses were used to explore the association of various factors on biologics initiation.

Results

Of 189 eligible patients (aged 37.7 ± 13.3 years; 76.2% were males), 30 (15.9 %) were started on biologics during follow-up. In the multivariable analysis model, age (odds ratio [OR]; 0.93; 95% confidence interval [CI], 0.89–0.98; P < 0.01), mental component summary score of Short-Form 36 Health Survey (OR, 0.18; 95% CI, 0.03–0.89; P = 0.04), erythrocyte sedimentation rate (OR, 1.02; 95% CI, 1.00–1.04; P = 0.02), presence of peptic ulcer disease (OR, 10.4; 95% CI, 2.21–48.8; P < 0.01), and lack of good response to nonsteroidal anti-inflammatory drugs (OR, 4.44; 95% CI, 1.63–12.1; P < 0.01) were found to be associated with biologics initiation.

Conclusions

Age, erythrocyte sedimentation rate, mental component summary score, comorbidities of peptic ulcer disease, and responsiveness to nonsteroidal anti-inflammatory drugs were associated with biologics initiation. It is essential that clinicians recognize these factors in order to optimize therapy.

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