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Table 1 Patient characteristics (n = 3471)

From: A comparison of comorbidities obtained from hospital administrative data and medical charts in older patients with pneumonia

Characteristic  
Mean age, years (SD) 77.3 (10.8)
Male gender, n (%) 1885 (54.3)
Nursing home residents, n (%) 675 (19.5)
Ethnic group, n (%)  
   Chinese 2721 (78.4)
   Malay 373 (10.7)
   Indian 225 (6.5)
   Others 152 (4.4)
No. of Elixhauser comorbid conditions, n (%)  
   0 258 (7.4)
   1-2 1544 (44.5)
   3-4 1263 (36.4)
   5-6 367 (10.6)
   7-8 34 (1.0)
   9-10 5 (0.1)
   >10 0 (0)
Hospital admission in the previous 90 days, n (%) 440 (12.7)
CURB* score, n (%)  
   0 1544 (44.5)
   1 1399 (40.3)
   ≥2 528 (15.2)
Mean length of stay, days (SD) 9.8 (12.4)
Death in hospital, n (%) 693 (20.0)
  1. *CURB = Constructed from 4 "core" adverse prognostic features: Confusion, Urea, Respiratory rate, Blood pressure [35]