Saturday, April 14, 2007

Correlation between St George’s Respiratory Questionnaire (SGRQ) and Six Minutes Walk Test (6- MWD) in COPD


Correlation between Quality Of Life in Chronic Obstructive Pulmonary Disease (COPD) Patients using St George’s Respiratory Questionnaire (SGRQ) and Functional Capacity using Six Minutes Walk Test (6- MWD)

Gunawan Kurniadi*, Nury Nusdwinuringtas*, Anita Ratnawati**

*Cipto Mangunkusumo Hospital, Jakarta- Indonesia

** Persahabatna Hospital, Jakarta-Indonesia

Abstract

Objective: This study was to assess whether Indonesian version of St George’s Respiratory Questionnaire (SGRQ) could serve as a practical outcome measure for medical rehabilitation of chronic obstructive pulmonary disease (COPD) .

Method: This was designed as correlation study . Spearmen’s rank correlation test, test-retest reliability, internal consistency Cronbach α were used for analysis.

Setting: This study was conducted at RSUPN-CM and RSUP Persahabatan.

Participated: 22 subjects suffering from COPD identified as stated in inclusion criteria.

Results : There are strong correlation between SGRQ subcales with 6 minutes walking distance test (r = - 0.49 for activity, r= - 0.58 for impacts, r= - 0.58 for total ); and moderately strong correlation with FEV 1 % prediction (r = - 0.46 for activity , r = - 0.43 for impacts, r = - 0.52 for total ). Strong correlation is also found in repeated test of SGRQ ( r= 0.76 for symptoms, r= 0.58 for activity , r= 0.51 for impacts, r= 0.58 for total). There is no significant difference among subscales except for total scores p= 0.049 in Wilcoxon test . internal consistency using Cronbach α ranged from 0.73 to o.83.

Conclusion : Activity and impacts subscales of SGRQ are proved to be valid of functional capacity and severity of lung obstruction . SGRQ is also repeatable and has high internal consistency.

Keywords : St George’s Respiratory Questionnaire (SGRQ), chronic obstructive pulmonary disease (COPD), quality of life, functional capacity

Physical Medicine and Rehabilitation , Fakulty Medicine – University of Indonesia, JakartaIndonesia; 2002

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