Base model included CRP, DAS28-ESR score, disease duration, and serological status. Model discrimination was assessed using ROC curve analysis. NRI and IDI were calculated to evaluate the improvement in predictive performance after the inclusion of NLR. NLR: neutrophil-to-lymphocyte ratio; AUC: area under the receiver operating characteristic curve; CI: confidence interval; NRI: net reclassification improvement; IDI: integrated discrimination improvement; CRP: C-reactive protein; DAS28: 28-joint Disease Activity Score; ESR: erythrocyte sedimentation rate; ROC: receiver operating characteristic.
The authors declare that they have no conflicts of interest.
Ethical approval
The study was approved by the Ethics Committee of ESIC Post Graduate Institute of Medical Sciences and Research, Basaidarapur, New Delhi, India (Approval No. ESIPGIMSR-IEC/2024011).
Consent to participate
Informed consent to participate in the study was obtained from all participants.
Consent to publication
Informed consent to publication was obtained from relevant participants.
Availability of data and materials
The data are available from the corresponding author upon reasonable request.
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