From: Serial pulmonary function tests to diagnose COPD in chronic heart failure
COPD (+)
COPD (-)
Total
History of OLD (+)
34 (18.2)
16 (8.6)
50 (26.7)
History of OLD (-)
26 (13.9)
111 (59.4)
137 (73.3)
60 (32.1)
127 (67.9)
187 (100)