|  |  | Standard for diagnosis of COPD | ||||||
---|---|---|---|---|---|---|---|---|---|
 |  |  | GOLD criterion |  | LLN criterion | ||||
Model* | Â | Â | (FEV1/FVC < 0.70) | Â | (FEV1/FVC < LLN) | ||||
 |  |  | AUC |  | H-L |  | AUC |  | H-L |
# | Input variables | Sens. (%)/Spec. (%) | (95% CI) | Brier | p-value | Sens. (%)/Spec. (%) | (95% CI) | Brier | p-value |
1 | ≥1 outpatient ICD-9 code | 76/67 | 0.75 (0.74-0.76) | 0.198 |  | 79/62 | 0.71 (0.70-0.72) | 0.198 |  |
2 | ≥2 outpatient ICD-9 code | 70/73 | 0.75 (0.74-0.76) | 0.199 |  | 73/69 | 0.72 (0.71-0.73) | 0.196 |  |
3 | ≥3 outpatient ICD-9 codes | 58/83 | 0.74 (0.73-0.75) | 0.201 |  | 62/80 | 0.71 (0.70-0.72) | 0.195 |  |
4 | ≥1 inpatient ICD-9 codes | 55/67 | 0.62 (0.61-0.63) | 0.235 |  | 6.5/99 | 0.57 (0.56-0.58) | 0.230 |  |
5 | ≥1 outpatient ICD-9 codes |  |  |  |  |  |  |  |  |
 | ≥1 Ipratropium Bromide MDI | 76/67 | 0.77 (0.76-0.78) | 0.192 |  | 53/83 | 0.75 (0.74-0.76) | 0.191 |  |
6 | ≥1 outpatient ICD-9 codes |  |  |  |  |  |  |  |  |
 | ≥1 albuterol MDI | 76/67 | 0.76 (0.75-0.77) | 0.196 |  | 68/70 | 0.74 (0.73-0.75) | 0.195 |  |
7 | ≥1 outpatient ICD-9 code |  |  |  |  |  |  |  |  |
 | ≥1 inpatient ICD-9 code |  |  |  |  |  |  |  |  |
 | ≥3 ipratropium bromide MDI |  |  |  |  |  |  |  |  |
 | ≥6 albuterol MDI | 68/76 | 0.78 (0.77-0.79) | 0.190 |  | 60/79 | 0.76 (0.75-0.77) | 0.188 |  |
8 | Model 7 and age | 72/74 | 0.79 (0.78-0.80) | 0.187 | 0.86 | 60/80 | 0.77 (0.76-0.78) | 0.187 | 0.50 |
9 | Model 8 and smoking | 73/74 | 0.79 (0.78-0.80) | 0.185 | 0.65 | 60/81 | 0.77 (0.76-0.78) | 0.185 | 0.34 |