Patient admission data (7529 patients from 234 units)
| Item | Metric | % Patient data completeness |
|---|---|---|
| FEV1, forced expiratory volume in 1 second; Pco2, Po2, carbon dioxide and oxygen tensions. | ||
| Age | Years | 99.9 |
| Age group | <55, 55–9, 60–4, 65–9, 70–4, 75–9, 80–4, 85+ | 99.9 |
| Sex | Male, female | 99.9 |
| Admitting physician | Respiratory, care of the elderly (CoE), general, other | 98 |
| Previous COPD admission | Yes, no | 94 |
| Living alone | Alone, with others | 94 |
| Social circumstances | Own home without social care, own home with social care, warden controlled, residential, other | 82 |
| Performance status | Normal, strenuous, limited activity, limited self care,bed/chair bound | 88 |
| Co-morbidity | Yes, no to presence in notes of heart disease, stroke,other chest problems, diabetes, locomotor problems, visual impairment | 100 |
| Smoking status | Current, ex (stopped >3 months ago), lifelong non-smoker | 95 |
| Pack years of smoking | <20, 20–39, 40–59, 60+ | 46 current/ex |
| Chest radiography | Yes, no to suspected/definite cancer, changes consistent with COPD, pneumonia, other abnormalities | 82 |
| Signs/symptoms | Increasing level of breathlessness | 97 |
| Increasing volume of sputum | 81 | |
| Changes in colour of sputum | 78 | |
| Colour of sputum | 80 | |
| Weight (kg) | <57.1, 57.1–73.0, >73.0 | 40 |
| FEV1 tertiles (most recent in last 5 years) | M <0.77, F <0.60; M 0.77–1.15, F 0.60–0.90;M >1.15, F >0.90 | 55 |
| % predicted FEV1 tertiles | <31%, 31–51%, >51% | 43 |
| Serum albumin (g/l) | <34, 34+ | 67 |
| Blood urea (μmol/l) | ⩽7.1, >7.1 | 92 |
| Blood creatinine tertiles (mmol/l) | <78, 78–99, 100+ | 92 |
| pH | <7.26, 7.26–7.34, 7.35+ | 82 |
| Bicarbonate | <23, 23–30, >30 | 73 |
| Pco2 (kPa) | ⩽6.0, >6.0 | 81 |
| Po2 (kPa) | <7.3, 7.3–8.0, >8.0 | 81 |
| Respiratory rate | <20, 20–9, 30+ | 81 |
| Saturated oxygen on inspired fraction | <86%, 86–92%, >92% | 90 inspired fractions |