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Correspondence response
Response to: ‘Evaluation of the association between anticarbamylated protein antibodies and longitudinal course of functional ability in rheumatoid arthritis’ by Ajeganova et al
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We thank Ajeganova et al1 for the interesting comments on our paper2, and note the different findings compared with our results.1 ,2 We would suggest a potential explanation for this lies within the different patient populations. Although inclusion criteria for the Swedish Better Anti-Rheumatic PharmacOTherapy (BARFOT) cohort and Leiden Early arthritis Clinic (EAC) are not detailed, we are aware from previous publications that inclusion criteria to these cohorts require patients to satisfy the 1987 American College of Rheumatology (ACR) classification criteria for rheumatoid arthritis (RA) at baseline and within 1 year of symptom onset, respectively.3 , …