Cohort
	Derivation (FHS) N = 2,574	Validation (BMC) N = 190	Testing (BMC) N = 399
Age (yrs), mean [SD]	66 [8.8]	59 [7.2]	56 [9.4]
Female (%)	55	54	58
Smoking Status (%)
Current	7	49	29
Former	52	32	23
Race/Ethnicity (%)
Black	0	52	53
Non-Hispanic White	100	40	28
Mod-Severe COPD (%)	17	36	26
Model C-Statistic
Men	0.92	0.87	0.73
Women	0.91	0.83	0.67