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Vol. 43. Issue 4.
Pages 205-211 (April 2007)
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Vol. 43. Issue 4.
Pages 205-211 (April 2007)
Original Articles
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Validity and Reliability of the St George's Respiratory Questionnaire in Adults With Cystic Fibrosis
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Alicia Padillaa,
Corresponding author
apadillag@mixmail.com

Correspondence: Dra. A. Padilla. Urbanización Carlinda, bloque 6, 2.º A. 29010 Málaga, España
, Gabriel Olveirab, Casilda Olveiraa, Antonio Doradoa, Antonio J. Platac, Inmaculada Gaspara, Javier Pérez-Fríasd
a Unidad de Fibrosis Quística, Servicio de Neumología, Hospital Regional Universitario Carlos Haya, Málaga, Spain
b Unidad de Fibrosis Quística, Servicio de Endocrinología y Nutrición, Hospital Regional Universitario Carlos Haya, Málaga, Spain
c Servicio de Medicina Interna, Hospital Regional Universitario Carlos Haya, Málaga, Spain
d Unidad de Fibrosis Quística Servicio de Pediatría-Neumología Infantil, Hospital Regional Universitario Carlos Haya, Málaga, Spain
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Objective

To study self-perceived quality of life in adults with cystic fibrosis (CF), and to assess the validity of the St George's Respiratory Questionnaire (SGRQ) for use in these patients.

Patients and methods

We studied 37 adults with CF who were in stable condition as indicated by their respiratory and nutritional status. Disease severity was assessed by spirometry used in conjunction with a modified National Institutes of Health (NIH) scoring system and the Bhalla scale. Nutritional status was evaluated by measuring height and weight, calculating body mass index, analyzing bioelectric impedance, and performing various laboratory tests. The patients' quality of life was assessed using the SGRQ.

Results

SGRQ scores were higher (indicating poorer quality of life) among patients with CF than in the general population or among patients with chronic obstructive pulmonary disease. Internal consistency coefficients indicated the SGRQ had good reliability (Cronbach's alpha, 0.864). Women with CF tended to score higher than men, although this difference was not statistically significantly. A statistically significant relationship was observed between SGRQ score and severity of pulmonary impairment (the more severe the impairment, the worse the patient's quality of life). Statistically significant positive relationships were found between SGRQ domains and age, body mass index, and body fat percentage. Significant negative relationships were found between these domains and the modified NIH score, the Bhalla score, forced expiratory volume in 1 second (expressed as a percentage of predicted), and somatomedin C and zinc levels.

Conclusions

Self-perceived quality of life is worse among adults with CF than in the general population or among patients with chronic obstructive pulmonary disease. The SGRQ is a valid instrument for analyzing health-related quality of life in adults with CF as it discriminates very well between different degrees of severity of pulmonary impairment and has acceptable internal consistency.

Key words:
Cystic fibrosis
Quality of life
St George's Respiratory Questionnaire
Objetivo

Estudiar la percepción de la calidad de vida (CV) en una población adulta con fibrosis quística (FQ) y valorar la validez del Cuestionario Respiratorio St. George (SGRQ) en estos pacientes.

Pacientes y métodos

Hemos estudiado a 37 personas adultas con FQ, estables desde el punto de vista respiratorio y nutricional. Se realizó una valoración de la gravedad de la enfermedad mediante espirometría y los sistemas NIH (National Institutes of Health) modificado y Bhalla, así como una valoración nutricional mediante la medición del peso, la talla, el índice de masa corporal, impedanciometría bioeléctrica y parámetros analíticos. Se estimó la percepción de la CV mediante el SGRQ.

Resultados

Las personas con FQ tienen mayores puntuaciones (peor CV) que la población general y que los afectados de enfermedad pulmonar obstructiva crónica (EPOC). El coeficiente alfa de Cronbach de la puntuación total fue de 0,864. Las mujeres con FQ presentan puntuaciones más altas que los varones, aunque sin alcanzar la significación estadística. Se observa una gradación de las puntuaciones (de forma estadísticamente significativa) en función de la grave-dad de la afectación pulmonar (a mayor gravedad, peor CV). Se han encontrado relaciones positivas, estadísticamente significativas, entre las dimensiones del SGRQ y la edad, el índice de masa corporal y el porcentaje de masa grasa, y negativas con el NIH modificado, el Bhalla, el volumen espiratorio forzado en el primer segundo (expresado en porcentaje) y las concentraciones de cinc y somatomedina C.

Conclusiones

Los adultos con FQ tienen peor percepción de la CV que la población general y que los afectados de EPOC. El SGRQ es válido para analizar la CV relacionada con la salud de las personas adultas con FQ, ya que discrimina muy bien entre los distintos grados de gravedad de la función pulmonar y presenta una adecuada consistencia interna.

Palabras clave:
Fibrosis quística
Calidad de vida
Cuestionario St George (SGRQ)
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References
[1]
BS Kerem, JM Rommens, JA Buchanan, D Markiewicz, TK Cox, A Chakravarti, et al.
Identification of the cystic fibrosis gene: genetic analysis.
Science, 245 (1989), pp. 1073-1080
[2]
MT Martínez, G García.
Fibrosis quística.
Arch Bronconeumol, 36 (2000), pp. 13-20
[3]
R Cantón, N Cobos, J de Gracia, F Baquero, J Honorato, S Gartner, et al.
Tratamiento antimicrobiano frente a la colonización pulmonar por Pseudomonas aeruginosa en el paciente con fibrosis quística.
Arch Bronconeumol, 41 (2005), pp. 1-25
[4]
PB Davis, M Drumm, MW Konstan.
Cystic fibrosis. State of the art.
Am J Respir Crit Care Med, 154 (1996), pp. 1229-1256
[5]
I Richardson, I Nyulasi, K Cameron, M Ball, J Wilson.
Nutritional status of an adult cystic fibrosis population.
Nutrition, 16 (2000), pp. 255-259
[6]
E Hatziagorou, P Karagianni, A Vidalis, M Bullinger, I Tsanakas, DISABKIDS-group.
Quality of life in cystic fibrosis.
Hippokratia, 6 (2002), pp. 67-71
[7]
L Gee, J Abbott, SP Conway, C Etherington, AK Webb.
Quality of life in cystic fibrosis: the impact of gender, general health perceptions and disease severity.
J Cyst Fibros, 2 (2003), pp. 206-213
[8]
M Ferrer, J Alonso, L Prieto, V Plaza, E Monso, R Marrades, et al.
Validity and reliability of the St. George's Respiratory Questionnaire after adaptation to a different language and culture: the Spanish example.
Eur Respir J, 9 (1996), pp. 1160-1166
[9]
MA Martínez-García, M Perpiñá, P Román, JJ Soler.
Consistencia interna y validez de la versión española del St. George's Respiratory Questionnaire para su uso en pacientes afectados de bronquiectasias clínicamente estables.
Arch Bronconeumol, 41 (2005), pp. 110-117
[10]
The Cystic Fibrosis Foundation.
pp. 1-15
[11]
MM Sockrider, PR Swank, DK Seilheimer, DV Schidlow.
Measuring clinical status in cystic fibrosis: internal validity and reliability of a modified NIH score.
Pediatr Pulmonol, 17 (1994), pp. 86-96
[12]
M Bhalla, N Turcios, V Aponte, M Jenkins, BS Leitman, DI McCauley, et al.
Cystic fibrosis: scoring system with thin-section CT.
Radiology, 179 (1991), pp. 783-788
[13]
A Alastrué Vidal, A Sitges Serra, Jaurrieta Mas, P Puig Gris, JM Abad Ribalta, A Sitges Creus.
Valoración antropométrica del estado de nutrición: normas y criterios de desnutrición y obesidad.
Med Clin (Barc), 80 (1983), pp. 691-699
[14]
PB Pencharz, M Azcue.
Use of bioelectrical impedance analysis measurements in the clinical management of malnutrition.
Am J Clin Nutr, 64 (1996), pp. 485-488
[15]
KR Segal, M van Loan, PI Fitzgerald, JA Hodgdon, TB van Itallie.
Lean body mass estimation by bioelectrical impedance analysis: a four-site cross-validation study.
Am J Clin Nutr, 47 (1988), pp. 7-14
[16]
The Cystic Fibrosis Genetic Analysis Consortium.
[17]
ADA.
Report of the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus.
Diabetes Care, 20 (1997), pp. 1183-1197
[18]
M Ferrer, C Villasante, J Alonso, V Sobradillo, R Gabriel, G Vilagut, et al.
Interpretation of quality of life scores from the St George's Respiratory Questionnaire.
Eur Respir J, 19 (2002), pp. 405-413
[19]
L Gee, J Abbott, SP Conway, C Etherington, AK Webb.
Validation of the SF-36 for the assessment of quality of life in adolescents and adults with cystic fibrosis.
J Cyst Fibros, 1 (2002), pp. 137-145
[20]
J Nunnally.
Psychometric theory, 2nd ed., McGraw Hill, (1978),
[21]
PH Klijn, HF van Stel, AL Quittner, J van der Net, W Doeleman, CP van der Schans, et al.
Validation of the Dutch cystic fibrosis questionnaire (CFQ) in adolescents and adults.
J Cyst Fibros, 3 (2004), pp. 29-36
[22]
L Gee, J Abbott, A Hart, SP Conway, C Etherington, AK Webb.
Associations between clinical variables and quality of life in adults with cystic fibrosis.
J Cyst Fibros, 4 (2005), pp. 59-66
[23]
L Gee, J Abbott, SP Conway, C Etherington, AK Webb.
Development of a disease specific health related quality of life measure for adults and adolescents with cystic fibrosis.
Thorax, 55 (2000), pp. 946-954
[24]
E Hatziagorou, P Karagianni, A Vidalis, M Bullinger, I Tsanakas, DISABKIDS-group.
Quality of life in children with cystic fibrosis and asthma.
Hippokratia, 6 (2002), pp. 12-14
[25]
AL Quittner, D Drotar, N Slocum, D Seidner, J Jacobsen.
Adherence to medical treatments in adolescents with cystic fibrosis: the development and evaluation of family-based interventions.
Promoting adherence to medical treatment in childhood chronic illness: concepts, methods, and interventions,
[26]
AL Quittner, A Buu.
Effects of tobramycin solution for inhalation on global ratings of quality of life in patients with cystic fibrosis and Pseudomonas aeruginosa infection.
Pediatr Pulmonol, 8 (2002), pp. 269-276
[27]
L Akanli, DB Lowenthal, S Gjonaj, AJ Dozor.
Plasma and red blood cell zinc in cystic fibrosis.
Pediatr Pulmonol, 35 (2003), pp. 2-7
[28]
AE Holland, JW Wilson, TC Kotsimbos, MT Naughton.
Metabolic alkalosis contributes to acute hypercapnic respiratory failure in adult cystic fibrosis.
Chest, 124 (2003), pp. 490-493

This study was partially financed with a grant from the health department of the autonomous community of Andalusia (Consejería de la Salud de la Junta de Andalucía 02/150) and by the Spanish Ministry of Health and Consumer Affairs (Ministerio de Sanidad y Consumo, Instituto de Salud Carlos III, Red R006/0015/0008).

Copyright © 2007. Sociedad Española de Neumología y Cirugía Torácica (SEPAR)
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