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. 2015 Dec 1;5(12):e008737. doi: 10.1136/bmjopen-2015-008737

Table 4.

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.