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Vol. 47. Issue 4.
Pages 184-189 (January 2011)
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Vol. 47. Issue 4.
Pages 184-189 (January 2011)
Original Article
DOI: 10.1016/S1579-2129(11)70044-1
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Reliability and Validity of a Short Version of the STAI Anxiety Measurement Scale in Respiratory Patients
Fiabilidad y validez de una versión corta de la escala de medida de la ansiedad STAI en pacientes respiratorios
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Juana Perpiñá-Galvaña,
Corresponding author
juana.perpina@ua.es

Corresponding author.
, Miguel Richart-Martínezb, María José Cabañero-Martínezc
a Máster en Enfermería, Departamento de Enfermería, Universidad de Alicante, Alicante, Spain
b Doctor en Psicología, Departamento de Enfermería, Universidad de Alicante, Alicante, Spain
c Doctor en Enfermería, Departamento de Enfermería, Universidad de Alicante, Alicante, Spain
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Abstract
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Abstract
Background

There is comorbidity between respiratory disease and anxiety. In order to measure the anxiety of hospitalized patients it is necessary to use reliable and valid, and preferably short questionnaires.

Objective

To analyze the reliability and validity of a shortened version of the state subscale of the “State-Trait Anxiety Inventory (STAI)” in respiratory patients.

Patients and methods

A total of 103 respiratory patients admitted to the respiratory ward between February of 2009 and February of 2010 were non-consecutively selected. They answered two questionnaires: the Spanish version of the STAI-state and a short version consisting of 7 items. Sociodemographic and clinical variables of the patients were also obtained. The internal consistency, and convergent and construct validity of the short scale were analyzed.

Results

The short scale did not have floor/ceiling effect, the α-Cronbach was acceptable (0.89), and correlated positively (r = 0.90; P =.01) and also maintained the factorial structure of the original scale (half anxiety-present items and half anxiety-absent items).

Conclusions

The short version of the state subscale of the STAI has showed good metric properties in hospitalized respiratory patients.

Keywords:
Anxiety
State-trait anxiety inventory
STAI
Reliability
Validity
Respiratory patients
Resumen
Antecedentes

Existe comorbilidad entre enfermedad respiratoria y ansiedad. Para medir la ansiedad en pacientes hospitalizados es necesario usar cuestionarios fiables, válidos, y preferiblemente, cortos.

Objetivo

Analizar la fiabilidad y validez de una versión corta de la escala de medida de la ansiedad STAI en pacientes respiratorios.

Pacientes y método

Se seleccionó una muestra no probabilística y no consecutiva de 103 pacientes con enfermedad respiratoria ingresados en la planta de neumología entre febrero de 2009 y febrero de 2010. Se administraron dos cuestionarios: la adaptación española de la subescala estado del Cuestionario de Ansiedad Estado-Rasgo (STAI) y una versión corta del mismo instrumento de 7 ítems. También se recogieron variables sociodemográficas y clínicas de los pacientes. Se analizó la consistencia interna y la validez convergente y de constructo de la escala corta.

Resultados

La escala corta no tiene efecto techo/suelo, el α-Cronbach es aceptable (0,89), correlaciona positivamente con la escala original (r = 0,90; p = 0,01) y mantiene la estructura factorial de esta última (mitad de ítems de ansiedad presente y la otra mitad de ansiedad ausente).

Conclusiones

La versión corta del STAI estado muestra buenas propiedades métricas en pacientes respiratorios hospitalizados.

Palabras clave:
Ansiedad
Cuestionario de ansiedad estado-rasgo
STAI
Fiabilidad
Validez
Pacientes respiratorios
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