Prevalence of anxiety and depression in patients with severe COPD: similar high levels with and without LTOT.
2007
The benefits of long-term oxygen therapy (LTOT) on mood in Chronic Obstructive Pulmonary Disease (COPD) are unproven. Longitudinal studies are affected by disease progression, the increased package of care (with LTOT) and may not control for known confounders on mood. We compared the point prevalence and severity of mood disturbance in patients with severe COPD, not on LTOT (the −LTOT group) to those with COPD on LTOT (the +LTOT group). We mailed the Hospital Anxiety and Depression (HAD) Score to 182 consecutive patients with severe COPD, identified from respiratory case notes in three UK Hospitals. We compared 57 patients not prescribed LTOT to 57 patients on LTOT, and used stratified sampling to match the groups as far as possible for age, gender, lung function and other possible confounders on mood. Or these, 25% of patients in both groups scored in the ‘definite’ case range for anxiety (HAD score ≥ 11). 37% of the −LTOT group and 33% of the +LTOT group scored in the ‘definite’ range for depression (HA...
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