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Table 1 Baseline characteristics of study population

From: Hospitalization costs for community-acquired pneumonia in Dutch elderly: an observational study

  Total CAP IPD-CAP non-IPD-CAP p-value
Admissiona, n 1785 71 1714  
Age in years, mean (SD) 77.4 (6.6) 76 (5.5) 77.5 (6.7)  
Male, n (%) 1307 (73.2) 43 (60.6) 1264 (73.7) *
ReceivedPCV13, n (%) 861 (48.2) 24 (33.8) 837 (48.8) *
Risk group for developing pneumococcal disease, n (%)
 • Low 248 (13.9) 18 (25.4) 230 (13.4)  
 • Medium 1207 (67.6) 47 (66.2) 1160 (67.7)  
 • High 330 (18.5) 6 (8.5) 324 (18.9)  
Length of stay in days, mean (95 % CI) 12.1 (11.6–12.6) 15.3 (12.3–18.9) 12.0 (11.5–12.4) *
 • Ward days, mean (95 % CI) 11.1 (10.7–11.6) 13.0 (10.3–15.8) 11.1 (10.6–11.5)  
 • ICU days, mean (95 % CI) 1.0 (0.8–1.2) 2.4 (0.9–4.2) 0.9 (0.7–1.1) *
 • Intubationdays, mean (95 % CI) 0.4 (0.3–0.6) 1.1 (0.3–2.2) 0.4 (0.3–0.6) *
Illness duration in daysb, mean (95 % CI) 16.9 (16.3–17.5)c 19.8 (16.1–24.1) 16.7 (16.1–17.4)c  
Days between onset and hospital admission, mean (95 % CI) 4.9 (4.6–5.2)d 4.3 (2.7–6.8) 4.9 (4.6–5.3)d  
Pneumococcal severity index (PSI), n (%)
 • I-II 126 (7.1) 5 (7.0) 121 (7.1)  
 • III-IV 1327 (74.3) 48 (67.6) 1279 (74.6)  
 • V 332 (18.6) 18 (25.4) 314 (18.3)  
In-hospitalmortality, n (%) 201 (11.3) 11 (15.5) 190 (11.1)  
30-day mortality, n (%) 235 (13.2)e 11 (15.5) 224 (13.1)e  
60-day mortality, n (%) 300 (16.8)e 12 (16.9) 288 (16.8)e  
6-months mortality, n (%) 444 (24.9)e 18 (25.4) 426 (24.9)e  
Location of discharge, n (%) 1584 (88.7) 60 (84.5) 1524 (88.9)  
 • Home 1371 (86.6) 51 (85.0) 1320 (86.6)  
 • Nursing home 160 (10.1) 8 (13.3) 152 (10)  
 • Others 53 (3.3) 1 (1.7) 52 (3.4)  
  1. *Statistically significant difference between non-IPD-CAP and IPD-CAP
  2. aAdmissions within 30 days post-discharge of a suspected CAP hospitalization episode were labeled as a readmission and analyzed as a continuation of the previous admission
  3. bNumber of days from onset to hospital discharge
  4. c11 with missing data
  5. d9 with missing data
  6. e2 with missing data