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Table 3 Crude and adjusted analysis according to ICU admission.

From: Influence of socioeconomic status on community-acquired pneumonia outcomes in elderly patients requiring hospitalization: a multicenter observational study

  Group N ICU/N group Crude OR (95% CI) P value Adjusted OR (95% CI) P value
Age (years): Median (range) ICU no 77 (65-100)     
  ICU yes 75 (65-87) -- 0.007 0.91 (0.86-0.96) 0.001
Municipality Family Income Low 32/536     
  High 19/115 3.12 (1.70-5.71) <0.001 -- --
Social Class V 7/186     
  I-IVb 28/325 2.41 (1.04-5.65) 0.037 -- --
Disabling Neurological Disease no 50/565     
  yes 1/86 0.12 (0.02-0.89) 0.013 -- --
PSI <4 4/214     
  ≥4 42/375 6.62 (2.34-18.74) <0.001 5.80 (2.01-16.69) 0.001
Combined antibiotic Treatment treatment no 12/400     
  yes 39/251 5.95 (3.05-11.60) <0.001 6.37 (2.89-14.05) <0.001
Radiotherapy no 49/647     
  yes 2/4 12.20 (1.68-88.52) 0.033 -- --
Bacteremiaa no 32/350     
  yes 11/55 2.48 (1.17-5.28) 0.015 -- --
Empyema no 47/634     
  yes 4/17 3.84 (1.20-12.25) 0.037 -- --
Admitting Hospital       
  1 23/117 Ref   Ref  
  2 14/163 0.38 (0.19-0.78) 0.011 0.21 (0.09-0.51) 0.001
  3 10/233 0.18 (0.08-0.40) <0.001 0.15 (0.06-0.39) <0.001
  4 4/48 0.37 (0.12-1.14) 0.104 0.74 (0.24-2.28) --
  5 0/90 0.02 (0.00-0.37) <0.001 NC --
LOS (days): Median (range) ICU no 8 (1-95)     
  ICU yes 15 (1-62) -- <0.001 1.05 (1.03-1.08) <0.001
  1. Abbreviations: CI: Confidence interval; ICU: Intensive Care Unit; LOS: Length of stay; M: Median; NC: Not Calculated; OR: Odds Ratio;
  2. PSI: Pneumonia Severity Index.
  3. a Only 405 patients in whom blood cultures were made were evaluated.
  4. For ICU admission we adjusted by age, PSI, combined antibiotic treatment, hospital admission and length of hospitalization.