Post-CAP mortality, length of hospital admission and consultation behaviour on the day of CAP diagnosis, over time
| Year | |||||
|---|---|---|---|---|---|
| 1998–2000 | 2001–2003 | 2004–2006 | 2007–2008 | 2009–2010 | |
| OR for mortality within 28 days of CAP diagnosis* | 1.01 (0.93 to 1.10) | 1 | 0.84 (0.78 to 0.91) | 0.73 (0.67 to 0.79) | 0.62 (0.57 to 0.68) |
| Length of hospital admission median, (lower-upper quartile), days | 8 (4–16) | 8 (4–17) | 8 (4–15) | 7 (3–14) | 7 (3–13) |
| 0–2 | 468 (11.7) | 660 (10.5) | 981 (11.9) | 999 (14.2) | 1093 (14.1) |
| 2–6 | 1138 (28.4) | 1831 (29.2) | 2595 (31.4) | 2364 (33.6) | 2731 (35.3) |
| 7–13 | 1145 (28.6) | 1737 (27.7) | 2311 (27.9) | 1827 (26) | 1987 (25.7) |
| ≥14 | 1256 (31.3) | 2037 (32.5) | 2383 (28.8) | 1848 (26.3) | 1930 (24.9) |
| Reason for admission, n (% of those hospitalised) | |||||
| Emergency: via A&E | 2027 (50.6) | 3760 (60) | 5559 (67.2) | 5073 (72.1) | 5914 (76.4) |
| Emergency: via GP | 1666 (41.6) | 2016 (32.2) | 2231 (27) | 1522 (21.6) | 1402 (18.1) |
| Emergency: via bed bureau | 102 (2.5) | 107 (1.7) | 125 (1.5) | 114 (1.6) | 121 (1.6) |
| Emergency: via consultant outpatient clinic | 26 (0.6) | 42 (0.7) | 43 (0.5) | 41 (0.6) | 42 (0.5) |
| Emergency: other means (including A&E from another place) | 66 (1.6) | 135 (2.2) | 143 (1.7) | 122 (1.7) | 127 (1.6) |
| Transfer (non-emergency), elective, not known | 120 (3) | 205 (3.3) | 169 (2) | 166 (2.4) | 135 (1.7) |
| Admitting diagnosis ICD10 Chapter X—diseases of the respiratory system | 3798 (94.8) | 5979 (95.4) | 7939 (96) | 6743 (95.8) | 7426 (95.9) |
| Hospitalisations on CAP diagnosis date, n (% of those hospitalised) | 3718 (92.8) | 5893 (94.1) | 7896 (95.5) | 6804 (96.7) | 7539 (97.4) |
| Relevant diagnosis on CAP date† (n, % all CAP) | |||||
| CPRD only | 3234 (46.5) | 3074 (34.3) | 2546 (24.4) | 1607 (19.1) | 1265 (14.4) |
| HES only | 2909 (41.8) | 4644 (51.8) | 5990 (57.4) | 5266 (62.6) | 5787 (65.7) |
| CPRD and HES | 809 (11.6) | 1249 (13.9) | 1906 (18.3) | 1538 (18.3) | 1752 (19.9) |
*Adjusted for age and sex using three-level model.
†General practice records included LRTI records as ‘potential CAP’, to allow for potentially conservative coding by GPs in the absence of radiographical confirmation of pneumonia (see Results section). HES records included any hospital admission record.
A&E, Accident and Emergency; CAP, community-acquired pneumonia; CPRD, Clinical Practice Research Datalink; GP, general practitioner; HES, Hospital Episode Statistics; ICD, International Classification of Diseases; LRTI, lower respiratory tract infection.