TABLE 4

Hospital Costs Based on Index Admission or Readmission

Patient Characteristic on Index VisitIndex admission, n (%)Median Total Costs, a Index Hospitalization Plus Readmission, $ (IQR)Median Cost of Index Hospitalization, b $ (IQR)Number Readmitted, n (%)Median Cost of Readmission, c $ (IQR)
All patients82 566470144956346 (7.7)11 344
No. of CCIs
 032 604 (39.5)3500 (2228–6024)3417 (2196–5735)1199 (3.7)5232 (2845–11 752)
 126 376 (31.9)4296 (2705–7524)4154 (2660–7056)1354 (5.1)6380 (3441–14 670)
 29595 (11.6)6710 (3729–14 265)6155 (3562–11 838)1096 (11.4)10 069 (4712–21 671)
 35697 (6.9)10 240 (5147–22 347)8856 (4754–17 822)928 (16.3)12 812 (5873–28 995)
 ≥48294 (10.0)16 779 (7817–38 680)13 966 (6832–30 233)1769 (21.3)16 192 (7690–37 307)
Hospital LOS, d
 1–244 215 (53.6)2912 (2040–4131)2838 (2010–3950)2330 (5.3)6178 (3283–14 123)
 3–728 882 (35.0)7792 (5452–12 087)7478 (5346–11 084)2526 (8.7)10 740 (5100–22 402)
 >7 9469 (11.5)30 994 (20 723–51 934)28 937 (19 802–45 907)1490 (15.7)16 028 (6973–39 887)
Complicated pneumonia
 None (uncomplicated)73 247 (88.7)4332 (2611–8316)4161 (2560–7563)5613 (7.7)9363 (4354–21 995)
 Complicated pneumonia diagnosis6457 (7.8)8834 (4428–19 610)8307 (4307–18 130)532 (8.2)12 798 (5416–25 539)
 Complicated pneumonia and pleural drainage procedure2862 (3.5)23 012 (15 248–38 059)22 469 (15 109–36 809)201 (7.0)9694 (4346–23 312)
  • a Total combined costs of whole cohort (index and readmission) = $1 003 447 052.

  • b Total combined costs for index hospitalizations = $839 813 057.

  • c Total cost for readmissions = $163 633 995, and percentage of cost attributable to readmissions = 16.31%.