Variable | All patients (n=22 003) Number (%) unless otherwise indicated |
Female sex | 10 605 (48.2) |
Age (years), mean±SD | 70.83±10.9 |
BMI (kg/m2), mean±SD | 27.2±6.1 |
Smoking status | |
Non-smoker | 1081 (4.9) |
Current smoker | 9326 (42.4) |
Ex-smoker | 10 033 (45.6) |
Missing | 1563 (7.1) |
Primary and secondary care consultations | |
Number of respiratory consultations in primary care* | |
1 | 4371 (19.9) |
2 | 7823 (35.6) |
3 | 4269 (19.4) |
≥4 | 3445 (25.1) |
Number of all consultations in primary care*, mean±SD | 12.9±9 |
Number who had at least one inpatient admission for respiratory code* | 326 (1.4) |
Exacerbations* | |
0 | 10 203 (46.4) |
1 | 6831 (31.0) |
2 | 2729 (12.4) |
≥3 | 2240 (10.2) |
Lung function | |
FEV1 (L), mean±SD | 1.43±0.61 |
FEV1/FVC ratio, mean±SD | 0.59±0.3 |
COPD treatment | |
Number of SABA prescriptions*, mean±SD | 4.78±5.3 |
Number using ICS | 12 925 (58.7) |
Number of LAMA prescriptions*, mean±SD | 3.02±4.5 |
Number of LABA inhalers*, mean±SD | 0.41±2.0 |
No treatment | 2718 (12.4) |
Vaccinations | |
Influenza vaccination ever | 13 894 (63.1) |
Pneumococcal vaccination ever | 6860 (31.2) |
Blood eosinophil count closest to index antibiotic prescription, mean±SD | 0.31±0.5 |
Recorded comorbidity | |
Diabetes | 3286 (14.9) |
Anxiety/depression | 1811 (8.2) |
Cardiovascular disease | 2407 (10.9) |
Concurrent medications | |
Paracetamol prescription* | 10 554 (48.0) |
Location | |
London | 86 (0.4) |
Midlands and East | 12 965 (58.9) |
North | 4577 (20.8) |
South | 32 349 (14.8) |
Missing | 1126 (5.1) |
*In year prior to index prescription.
BMI, body mass index; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; ICS, inhaled corticosteroid; LABA, long-acting beta-agonist; LAMA, long-acting muscarinic antagonist; SABA, short-acting beta-agonist.