Table 2

Patient characteristics at time of diagnosis
OutpatientsaN=340 Inpatients N=241 Total N=581 p
Age, mean (SD) 51.0 (18.2) 66.6 (16.4) 57.5 (19.1) <0.001
18 – 49, % 49.4 15.8 35.5 <0.001
50 – 64,% 25.0 25.3 25.1
65 – 74, % 12.1 21.2 15.8
>74, % 13.5 37.8 23.6
Gender (male), % 55.6 55.6 55.6 NS
Residence, %
Private home 87.1 90.0 88.3 <0.001
Health/geriatric institution 12.9 10.0 11.7
Pneumonia Severity Index, mean score 51.4 86.7 66.0 <0.001
I-II, % 79.4 29.9 58.9 <0.001
III, % 13.2 25.7 18.4
IV-V, % 7.4 44.4 22.7
Radiological findings:
Unilobar, % 99.4 87.1 94.3 <0,001
Multilobar, % 0.0 4.1 1.7
Bilateral, % 0.6 8.7 4.0
Glycemia, mg/dL, mean (SD) 109.8 (25.1) 142.0 (53.4) 130.2 (47.7) <0.001
Comorbidity, %
No. of conditions, mean (SD) 6.0 (3.9) 7.8 (4.2) 6.8 (4.8) <0.001
Hypertension 29.7 57.7 41.3 <0.001
Diabetes mellitus 9.7 29.9 18.1 <0.001
Dyslipemia 32.6 37.3 34.6 NS
Obesity 25.6 25.3 25.5 NS
Current smoker 25.6 25.3 25.5 NS
History of alcoholism 3.8 5.4 4.5 NS
Ischemic heart disease 7.6 11.2 9.1 NS
Stroke 1.8 13.7 6.7 <0.001
Liver disease 1.2 8.3 4.1 <0.001
Heart failure 3.8 16.2 9.0 <0.001
Renal insufficiency 4.1 14.1 8.3 <0.001
Asthma 9.7 12.4 10.8 NS
COPDb 11.8 36.5 22.0 <0.001
Neuropathies 2.6 3.7 3.1 NS
Dementia 1.8 13.3 6.5 <0.001
Depression 14.7 22.4 17.9 0.017
Malignancies 9.4 14.9 11.7 0.041
AIDS 2.1 2.8 2.5 NS
Charlson comorbid index, mean (SD) 0.5 (1.0) 1.1 (0.9) 0.8 (0.8) <0.001
0, % 63.5 42.8 48.7 <0.001
1, % 28.1 37.7 34.9
2, % 6.6 15.2 12.7
3, % 0.0 2.4 2.1
6, % 1.8 1.9 1.5
RUBc, Mean score (SD) 2.5 (0.9) 3.0 (0.7) 2.7 (0.8) <0.001
RUB-1, % 13.5 4.6 9.8 <0.001
RUB-2, % 26.5 11.2 20.1
RUB-3, % 51.2 68.0 58.2
RUB-4, % 7.6 14.9 10.7
RUB-5, % 1.2 1.2 1.2

SD: standard deviation; NS: non significant;

aOutpatient: includes patients diagnosed in primary care centres and emergency rooms at hospitals; bCOPD: chronic obstructive pulmonary disease; cRUB: Resources utilization bands.

Sicras-Mainar et al.

Sicras-Mainar et al. BMC Infectious Diseases 2012 12:283   doi:10.1186/1471-2334-12-283

Open Data