From: Using an electronic medical record (EMR) to conduct clinical trials: Salford Lung Study feasibility
 | Asthma only | COPD 1 | COPD and asthma cohort 1 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Total | Subset ≤1 EXAC | Subset 2 EXAC | Subset ICS or ICS/LABA | Total | Subset ≤1 EXAC | Subset 2 EXAC | Subset ICS/LABA LABA or LAMA | Total | Subset ≤1 EXAC | Subset 2 EXAC | Subset ICS/LABALABA or LAMA |
N | 7981 | 7525 | 456 | 6606 | 4478 | 2247 | 2231 | 2997 | 1718 | 812 | 906 | 1223 |
Short courses oral steroids2 | 26.9 | 20.3 | 137.5 | 29.8 | 92.5 | 41.0 | 144.6 | 118.6 | 103.9 | 44.6 | 157.4 | 127.5 |
Antibiotics | 96.8 | 90.7 | 197.6 | 100.0 | 180.6 | 100.9 | 261.2 | 206.6 | 196.4 | 108.4 | 275.3 | 218.5 |
GP visits - all cause3 | 1068.2 | 1041.9 | 1515.7 | 1097.2 | 1525.9 | 1296.5 | 1757.9 | 1599.6 | 1531.1 | 1285.9 | 1751.0 | 1587.0 |
Hospitalisations - all cause | 25.5 | 25.3 | 29.6 | 23.3 | 53.4 | 51.3 | 55.4 | 53.3 | 46.2 | 37.1 | 54.3 | 50.6 |
Hospitalisations - respiratory | 2.8 | 2.6 | 6.0 | 2.9 | 13.6 | 9.1 | 18.0 | 16.6 | 14.3 | 10.5 | 17.7 | 17.5 |