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Inicio Medicina Clínica Validación de las versiones en español de la Clinical Anxiety Scale y del Phys...
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Vol. 121. Issue 10.
Pages 367-374 (January 2003)
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Vol. 121. Issue 10.
Pages 367-374 (January 2003)
Originales
Validación de las versiones en español de la Clinical Anxiety Scale y del Physician Questionnaire para la evaluación de los trastornos de ansiedad
A validation study of the Spanish versions of the Clinical Anxiety Scale and the Physician Questionnaire for the assessment of anxiety disorders
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Antonio Bulbenaa, Julio Bobesb, Antonio Luquec, Rafael Dal-Réc, Javier Ballesterosd,
Corresponding author
iip@fundacion-iip.org

Correspondencia: Dr. J. Ballesteros. Fundación M. Josefa Recio-Instituto de Investigaciones Psiquiátricas. Egaña, 10. 48010 Bilbao. Vizcaya. España.
, Nora Ibarrad, el Grupo de Validación en Español de Escalas Psicométricas (GVEEP)
a Servicio de Psiquiatría. Hospital del Mar. Barcelona. España
b Área de Psiquiatría. Facultad de Medicina. Universidad de Oviedo. Oviedo. España
c Departamento Médico. GlaxoSmithKline, SA. Tres Cantos. Madrid. España
d Fundación M. Josefa Recio-Instituto de Investigaciones Psiquiátricas. Bilbao. Vizcaya. España
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Fundamento y objetivo

Validar las versiones españolas de la Clinical Anxiety Scale (CAS) y delPhysician Questionnaire (PQ) para valorar la gravedad sintomática presente en pacientes condiagnóstico de trastornos de ansiedad (TA) y tratados ambulatoriamente.

Pacientes y método

Estudio observacional, prospectivo y multicéntrico (15 centros de asistenciapsiquiátrica) con períodos de seguimiento de 1 a 6 semanas en pacientes con TA clínicamenteestables o inestables. Se evaluaron la validez convergente, frente a la Hamilton Anxiety RatingScale; la validez discriminante, frente a la Impresión Clínica Global, así como la fiabilidad (coherenciainterna, estabilidad temporal y entre observadores) y sensibilidad al cambio.

Resultados

Se incluyo a 161 pacientes con TA (48 pacientes estables y 113 inestables). Ambasescalas presentaron valores adecuados de validez convergente (r ≥ 0,70) y discriminante (p. 0,001), coherencia interna (α de Cronbach > 0,75), estabilidad temporal (coeficiente de correlacionintraclase [CCI] > 0,90), fiabilidad entre observadores (CCI > 0,90) y sensibilidad alcambio (p < 0,0001; tamano del efecto ≥ 1,5).

Conclusiones

Las versiones en español de la CAS y del PQ presentan valores adecuados de validezy fiabilidad para valorar la gravedad y evolución sintomática en pacientes ambulatoriosdiagnosticados de TA.

Palabras clave:
Ansiedad
Escalas psicométricas
Validez
Fiabilidad
Sensibilidad al cambio
Clinical Anxiety Scale
Physician Questionnaire
Background and objective

To validate the Spanish versions of both the Clinical Anxiety Scale(CAS) and the Physician Questionnaire (PQ) to assess the severity of symptoms in patients withAnxiety Disorders (AD) treated in ambulatory psychiatric care facilities.

Patients and method

Observational, prospective and multi-centre study (15 psychiatric facilitiesincluded) with a follow-up of 1 to 6 weeks in clinically stable or unstable AD patients. We assessedtheir convergent validity (with the Hamilton Anxiety Rating Scale as reference), discriminantvalidity (as compared with the Clinical Global Impression), reliability (internal consistency,test-retest and inter-raters) and sensitivity to change.

Results

One hundred and sixty one AD patients were included (48 stable and 133 unstablepatients). Both the CAS and the PQ showed appropriate convergent (r ≥ 0.70) and discriminantvalidity (p ≤ 0.001), internal consistency (Cronbach's α > 0.75), test-retest reliability (intraclasscorrelation coefficient [ICC] > 0,90), inter-raters reliability (ICC > 0.90) and sensitivity tochange (p < 0.0001; effect size ≥ 1.5).

Conclusions

The Spanish versions of both rating scales show appropriate validity and reliabilityand thus can be used to assess the severity of anxiety symptoms and their change in AD patientstreated in ambulatory care.

Key words:
Anxiety
Psychometric rating scales
Validity
Reliability
Sensitivity to change
Clinical Anxiety Scale
Physician Questionnaire

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