No abstract

This study examines the association between somatic co-morbidity and both general and disease-specific health-related quality of life (HRQoL) in patients with asthma and chronic obstructive pulmonary disease (COPD). A cross-sectional analysis was done among 161 COPD patients and 395 asthma patients, aged 40-75 years, recruited from general practice. In the total study population, 47% had no, 32% had one, and 21% had two or more somatic co-morbid conditions, with no significant differences between asthma and COPD patients. Co-morbidity appeared to be associated with poor disease-specific HRQoL in asthma [odds ratio (OR) = 2.08 (1.37-3.18)] and with poor general HRQoL in asthma [OR = 2.96 (1.93-4.53)] and COPD [1.81 (0.91-3.60)] patients. Poorest HRQoL was found in patients with more than one co-morbid condition. Cardiac disease and hypertension were associated with poor disease-specific HRQoL in asthma. Of all co-morbid conditions, musculoskeletal disorders were most strongly associated with poor general HRQoL. Cardiac disease was found to be associated with general and disease-specific HRQoL in asthma but not in COPD. In studies on patients with asthma or COPD aged 40-75 years, co-morbidity should be treated as a determinant of HRQoL.

Our findings suggest that psychosocial coping resources and coping style are independently associated with HRQoL in patients with asthma or COPD. Further research should explore the possibilities of intervening on these factors, aiming to improve HRQoL in patients with asthma or COPD.

In this study a randomised controlled trial was carried out to investigate the effectiveness of an education programme for patients with asthma or chronic obstructive pulmonary disease (COPD). All asthma and COPD patients using medication and experiencing pulmonary symptoms were randomly assigned to the intervention (n=139) or usual-care group (n=137). The intervention consisted of taylor-made education conducted by a general practice assistant and focussing on a patients' technical skills and coping with the disease. Measurements took place at baseline, and after 1 and 2 years of follow-up. After 1 and 2 years the inhalation technique was significantly better in the intervention group compared to the usual-care group. No significant differences were observed regarding disease symptoms, health related quality of life, compliance, smoking cessation, self-efficacy, and coping. The results only support the implementation of the intervention regarding the technical skills (inhalation technique). However, given the importance of improvement of patients' coping and the need for more efficient care, we recommend further exploration of the possibilities of a more structured and intensive education programme.

The finding that women with asthma aged 16-34 and 56-75 years report poorer HRQoL than men is not due to a more severe disease state in terms of pulmonary obstruction but does seem to be related to a more severe subjective disease state in women than in men.