VALIDATION OF THE SPANISH VERSION OF THE “LIVING WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE (LCOPD)” QUESTIONNAIRE
Author(s)
Lahoz R1, Galera J1, Lleonart M1, Miravitlles M21Novartis Pharmaceuticals, Barcelona, Spain, 2Hospital Clínic, Barcelona, Spain
Presentation Documents
OBJECTIVES: To validate the Spanish version of the quality of life (QoL) specific questionnaire for patients with COPD “Living with Chronic Obstructive Pulmonary Disease” (LCOPD). METHODS: Observational, prospective, multicenter study in a sample of patients with moderate/severe COPD. Data were collected at inclusion and at day 15, including the Spanish version of LCOPD (22 items, range:22 worst - 44 best) and the “gold standard” Saint George Respiratory Questionnaire (SGRQ). Additionally, socio-demographics, clinical data and one item about self-perceived change in health status between visits were recorded. Feasibility, validity, reliability (internal consistency, test-retest) and responsiveness to change of the LCOPD Spanish version were evaluated. RESULTS: A total of 142 patients were included, 87.1% males, mean age (SD) was 67.4 (8.2) years, 52.7% with primary studies, 75% former smokers, FEV1 (%) = 48.5%, (SD= 13.3), 51.3% stage II, 37.6% stage III and 11.1% stage IV. Mean (SD) score in LCOPD was 33.0 (6.7). LCOPD questionnaire showed low levels of absent information: the mean number of items not responded per patient was <0.1, and no item accumulated more than 1 missing response. Floor and ceiling effects of LCOPD (proportion of patients accumulated in the minimum and maximum possible scores, respectively), were low (6%). LCOPD showed satisfactory levels of reliability: high internal consistency (Cronbach’s alpha= 0.94) and excellent test-retest reliability among patients who reported subjective stability in their health status (inter-class correlation coefficient= 0.92, p<0.001). Correlations between LCOPD and SGRQ global scores were very high (0.85), and correlations between LCOPD and SGRQ dimensions were moderate to high (0.60 to 0.87). Significant differences (p<0.05) in LCOPD were observed in exacerbated patients who reported an improvement, with a small to moderate effect size (0.31). CONCLUSIONS: According to preliminary results, Spanish version of LCOPD showed satisfactory psychometric properties in terms of feasibility, validity, reliability and responsiveness to change.
Conference/Value in Health Info
2009-10, ISPOR Europe 2009, Paris, France
Value in Health, Vol. 12, No. 7 (October 2009)
Code
PRS41
Topic
Patient-Centered Research
Topic Subcategory
Patient-reported Outcomes & Quality of Life Outcomes
Disease
Respiratory-Related Disorders