Table 3. Prediction of mortality for ADO and ADO-A3 indices.

DeLong's test, p-values less than 0.05 were considered statistically significant.

ADO: age, dyspnea severity, and airflow obstruction cut-off point 6, ADO-A3: age, dyspnea severity, and airflow obstruction cut-off point 7, established by Youden’s index, AUC: area under the curve

Predictive capacity		ADO	ADO-A3	p-value
1 year	AUC	0.78	0.81	0.45
	Sensitivity	62%	81%
	Specificity	83%	73%
3 years	AUC	0.77	0.82	0.038
	Sensitivity	79%	69%
	Specificity	65%	82%