From: Anxiety and depression in COPD patients and correlation with sputum and BAL cytologyAnsietà e depressione nei pazienti con BPCO e correlazione con la citologia dell’espettoratoe del BAL
Severity of COPD
Patient number (%)
BODE index
Stage II
30 (50%)
1 (1 to 4)
Stage III
20 (33.3%)
4 (3 to 6)
Stage IV
10 (16.7%)
7 (6 to 9)