Chronic lung diseases affected the quality of life of patients. We aimed to (1) evaluate the health related quality of life (HRQOL) in patients with chronic lung diseases (2) examine the correlation among the HRQOL measures.
Patients who joined the Pulmonary Rehabilitation Program between August and December 2004 were included. Pulmonary function, blood gases and 6-min walking test were assessed. HRQOL instruments included: SF-36 (Hong Kong), St George’s Respiratory Questionnaire (SGRQ) and the Functional Impairment Checklist (FIC).
The group consisted of 28 male (60.9.%) and 18 female (39.1%) with a mean age of 74.1 (SD + 9.5, range 39 –87). The mean FEV1 was 0.76 (SD 0.46), FVC 1.4 (SD + 0.58) with the FEV1 % predicted 51.2% (SD 24.9). The pulmonary diagnosis included Chronic Obstructive Pulmonary Diseases (COPD 72%), chronic asthma (14%) and pulmonary tuberculosis (10%). The SF-36 domain scores were significantly impaired as compared with the population norms, particularly in physical functioning (mean: 37.4 vs. 91.8), role physical (mean: 35.9 vs. 82.4), general health (mean 37.1 vs. 55.98), vitality (mean 46.7 vs. 60.3) and role emotion (mean: 52.2 vs. 71.7). The norm-based physical component summary (PCS) was 25.7 (mean + SD 11.1) and mental component summary (MCS) was 52.8 (mean + SD 12.6). There was significant correlation between SF-36 PCS and FIC scales (FIC-symptom: -0.33, p = 0.027; FIC-disability: -0.62, p < 0.001). The SF-36 MCS correlated moderately with FIC-disability (-0.39, p =0.008) but not with FIC-symptom and with SGRQ domains. The SGRQ activity domain correlated moderately with SF-36 PCS (-0.44, p = 0.15) and FIC domains (FIC-symptom: 0.37, p =0.44; FIC-disability: 0.5, p = 0.005). However, the correlation between the other SGRQ domains and SF-36 / FIC was not significant.
(1)The HRQOL of patients with chronic lung diseases was significantly impaired.(2)Moderate correlations existed among the different HRQOL instruments.
Both generic and disease specific HRQOL instruments should be used as in the comprehensive assessment of patients suffering from chronic lung diseases.
Siu Pui Lam, None.