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COPD. 2014 Sep;11(5):480-8. doi: 10.3109/15412555.2014.898030. Epub 2014 May 15.

Usefulness of the CAT, LCOPD, EQ-5D and COPDSS scales in understanding the impact of lung disease in patients with alpha-1 antitrypsin deficiency.

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  • 11Istituto di Malattie dell'Apparato Respiratorio, Dipartimento Medicina Clinica e Sperimentale, Universita' di Sassari , Italy.


Alpha-1-antitrypsin deficiency (AATD) is an inherited disorder responsible for early onset emphysema associated with a significant impairment of health-related quality of life (HRQoL). Our aim was to assess the usefulness of different instruments to evaluate the HRQoL in patients with AATD compared to non-AATD COPD. Observational, cross-sectional study in which all patients filled out a series of questionnaires: the COPD severity score (COPDSS), the EuroQoL 5-Dimensions (EQ-5D), the Living with COPD (LCOPD) and the COPD Assessment Test (CAT). A total of 96 patients were included, 35 with AATD (mean age 56.5 yrs, 57.1% male and mean FEV1(%) 48.7% and 61 non-AATD COPD (70.3 yrs, 80.3% men and FEV1(%) 47%. The questionnaire scores were similar, with a tendency towards worse scores in AATD for the EQ-5D (VAS) (64.8 (20.2) vs. 71.6 (17.1); p = 0.08). The correlations between the different scores and FEV1(%) were significant in both groups for COPDSS and LCOPD, but not for CAT and EQ-5D. In general, the correlations of scores with FEV1(%) were stronger for AATD compared with non-AATD COPD patients: COPDSS r = -0.570, p < 0.01 for AATD and r = -0.260, p < 0.05 for COPD; LCOPD r = -0.502, p < 0.001 for AATD and r = -0.304, p < 0.05 for non-AATD COPD. Patients with AATD have a similar degree of HRQoL impairment as older subjects with non-AATD COPD and showed a stronger correlation between HRQoL measurements and lung function impairment compared with non-AATD COPD. This may be related to the characteristics of the disease in these patients who are usually younger, with less co-morbidity and lower smoking consumption.


Alpha-1-antitrypsin deficiency; CAT; COPD; COPDSS; EQ-5D; quality of life

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