“…[1][2][3] The true prevalence of these conditions in patients with COPD varies and depends upon the measurement tool used for their assessment. [4][5][6] Studies examining the effect of psychological disorders in patients with COPD have shown that such patients have more visits to the primary care physician and ED, 7,8 greater risk of exacerbation [7][8][9][10][11] and hospitalization, 8,9 as well as longer hospital stays 2,9 and higher risk of death, 2,3,9,11,12 than patients with COPD in good mental health.…”