Table 4 Subgroup Analyses.
Characteristic | Characteristic Value | Characteristic Prevalence (%) | Attack Rate in Samples | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|---|---|
History of comorbid Chronic Pulmonary Disease | Yes | 0.8 | 39.3 | 85.9 | 67.6 | 28.1 | 97.0 |
No | 99.2 | 7.1 | 29.4 | 95.1 | 36.6 | 93.3 | |
Future COPD Diagnosis | None Recorded* | 95.9 | 6.9 | 30.4 | 95.2 | 36.4 | 93.8 |
Within 5 Years | 2.0 | 14.3 | 36.6 | 90.1 | 42.2 | 87.8 | |
In more than 5 Years Time | 2.1 | 21.6 | 22.8 | 78.8 | 29.2 | 72.7 | |
More than one respiratory infection in previous calendar year or current calendar year to date | Yes | 2.6 | 57.6 | 80.8 | 52.2 | 41.5 | 86.6 |
No | 97.4 | 60 | 25.2 | 95.7 | 34.8 | 93.4 | |
BTS/SIGN Treatment Step | 0 | 6.8 | 2.9 | 21.3 | 98.6 | 56.5 | 93.7 |
1 | 21.7 | 1.3 | 8.2 | 99.0 | 28.3 | 95.9 | |
2 | 9.7 | 3.3 | 10.7 | 97.1 | 16.7 | 95.2 | |
3 | 27.6 | 5.2 | 16.9 | 95.8 | 25.1 | 93.3 | |
4 | 34.2 | 15 | 43.3 | 89.6 | 40.2 | 90.7 | |
More than one asthma related consultation in previous calendar year, or current calendar year to date | Yes | 13.1 | 29.8 | 60.9 | 78.3 | 42.1 | 88.5 |
No | 86.9 | 4.0 | 16.7 | 97.0 | 29.6 | 93.8 | |
More than one OCS prescription in previous calendar year, or current calendar year to date | Yes | 2.3 | 96.8 | 100 | 6.1 | 49.0 | 100 |
No | 97.7 | 5.2 | 20.1 | 96.1 | 30.6 | 93.3 | |
Asthma attack recorded in primary care in the last 2 years | Yes | 14.3 | 46.3 | 70.3 | 61.4 | 37.0 | 86.5 |
No | 85.7 | 0.8 | 3.8 | 99.4 | 28.7 | 93.9 | |
Peak Flow Measurement in the last week | Yes | 2.4 | 9.8 | 40.4 | 93.0 | 35.3 | 94.3 |
No | 97.6 | 7.3 | 29.8 | 94.9 | 36.2 | 93.3 | |
Blood Eosinophil Measurement ever recorded | Yes | 27.3 | 11.9 | 38.3 | 91.3 | 34.4 | 92.5 |
No | 72.7 | 5.7 | 26.1 | 96.2 | 37.7 | 93.6 | |
Smoking Status | Current | 14.9 | 12.9 | 29.9 | 89.5 | 28.2 | 90.3 |
Former | 16.7 | 12.1 | 42.8 | 91.7 | 39.0 | 92.8 | |
Never | 68.4 | 5.0 | 25.7 | 96.7 | 39.1 | 94.0 |
