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Vol. 149. Issue 7.
Pages 293-299 (October 2017)
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Vol. 149. Issue 7.
Pages 293-299 (October 2017)
Original article
Evaluation of the activity of rheumatoid arthritis in clinical practice. Agreement between self-rated clinimetric evaluation and clinical evaluation with activity indexes: DAS28, CDAI and SDAI
Evaluación de la actividad de la artritis reumatoide en la atención clínica habitual. Concordancia entre la autoclinimetría y la evaluación clínica con los índices de actividad: DAS28, CDAI y SDAI
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Gabriel Horta-Baasa,
Corresponding author
gabho@hotmail.com

Corresponding author.
, Arturo Pérez Bolde-Hernándeza, María Fernanda Hernández-Cabreraa, Imelda Vergara-Sánchezb, María del Socorro Romero-Figueroac
a Servicio de Reumatología, Hospital General Regional 220, Instituto Mexicano del Seguro Social, Toluca, Estado de México, Mexico
b Servicio de Pediatría, Hospital General Regional 1, Instituto Mexicano del Seguro Social, Mérida, Yucatán, Mexico
c Coordinación de Investigación en Salud, Delegación Estado de México Poniente, Instituto Mexicano del Seguro Social, Toluca, Estado de México, Mexico
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Tables (5)
Table 1. General characteristics of the sample.
Table 2. Correlation between PAS-II and RAPID-3 items and core set parameters of measurements recommended by the ACR and EULAR.
Table 3. Agreement of the degree of activity of rheumatoid arthritis measured by self-rated clinimetric evaluation and CDAI, SDAI and DAS28.
Table 4. Agreement between intervention thresholds measured by self-rated clinimetric evaluation and SDAI as reference standard.
Table 5. Utility of PAS-II and RAPID-3 to identify patients with moderate-severe activity considering SDAI as the reference test.
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Abstract
Introduction and objective

To achieve control of rheumatoid arthritis (RA) it is necessary to be able to evaluate its activity. The American College of Rheumatology (ACR) recommends for this purpose indexes of activity that can be performed by the patient (PAS-II and RAPID-3) and IA including medical evaluation with laboratory studies (DAS28 and SDAI) or without them (CDAI). The objective was to analyze the concordance between self-rated clinimetric evaluation and clinimetric evaluation performed by the physician.

Patients and method

Analytical cross-sectional study in 126 patients with RA. The agreement was evaluated through the weighted κ coefficient and the Krippendorff's α coefficient.

Results

The PAS-II and RAPID-3 significantly correlated with all variables included in the core set of measures recommended by the ACR/EULAR. The agreement between PAS-II and CDAI-SDAI was good (κ: 0.6, α: 0.61–0.62), and moderate with DAS28-ESR (κ: 0.53, α: 0.56). The concordance between RAPID-3 and CDAI-SDAI was moderate (κ: 0.55–0.57, α: 0.50–0.51), and moderate with DAS28-ESR (κ: 0.55, α: 0.53). When categorizing the activity in remission/low activity vs. moderate/severe activity, the agreement was greater with the PAS-II (0.59 vs. 0.34; P=.012).

Conclusion

The good concordance between PAS-II and SDAI supports their use in clinical practice, especially if biomarkers of inflammation or the possibility of joint count are not available. However, in order to recommend its routine application in clinical practice, it is necessary to perform longitudinal studies that assess its responsiveness.

Keywords:
Patient-reported outcomes
Self-assessment
Rheumatoid arthritis
Agreement
Clinimetrics
Resumen
Introducción y objetivo

Para lograr el control de la artritis reumatoide (AR) es necesario poder evaluar de forma objetiva su actividad. El American College of Rheumatology (ACR, «Colegio Americano de Reumatología») recomienda para este propósito índices de actividad que pueden ser realizados por el paciente (PAS-II y RAPID-3) y la evaluación médica con estudios de laboratorio (DAS28 y SDAI) o sin ellos (CDAI). Nuestro objetivo fue analizar la concordancia entre la autoclinimetría y la clinimetría realizada por el médico.

Pacientes y método

Estudio transversal analítico en 126 pacientes con AR. La concordancia fue evaluada mediante el coeficiente κ ponderado y por el coeficiente α de Krippendorff.

Resultados

El PAS-II y el RAPID-3 presentaron una correlación significativa con las variables incluidas en el core set del ACR/EULAR. La concordancia entre el PAS-II y el CDAI-SDAI fue buena (κ: 0,6, α: 0,61-0,62), y moderada con el DAS28-VSG (κ: 0,53, α: 0,56). La concordancia entre el RAPID-3 y el CDAI-SDAI fue moderada (κ: 0,55-0,57, α: 0,50-0,51), y moderada con el DAS28-VSG (κ: 0,55, α: 0,53). Al categorizar la actividad en remisión/baja actividad frente a actividad moderada/grave la concordancia favoreció al PAS-II (0,59 frente a 0,34; p=0,012).

Conclusión

La buena concordancia entre el PAS-II y el SDAI apoya su uso en la práctica clínica, especialmente si no se dispone de biomarcadores de inflamación o de la posibilidad del recuento articular. Sin embargo, para recomendar su aplicación sistemática en la práctica clínica es necesario realizar estudios longitudinales que evalúen su sensibilidad al cambio.

Palabras clave:
Resultados comunicados por los pacientes
Autoevaluación
Artritis reumatoide
Concordancia
Clinimetría

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