Hospital financing of ischaemic stroke: determinants of funding and usefulness of DRG subcategories based on severity of illness

Table 1 Average hospitalisation cost of ischaemic stroke by SOI based on the retrospective dataset (bottom-up cost)

Retrospective aggregate data (2008–2011)	SOI 1	SOI 2	SOI 3	SOI 4	ALL
Number of stroke admissions	98	1292	659	447	2496
%	3.9%	51.8%	26.4%	17.9%	100%
Average LOS in days (SD)	6.06 (1.28)	10.81 (1.22)	19.74 (7.14)	35.23 (12.52)	17.34 (4.48)
LOS cost^a	€2480	€4371	€7972	€14,352	€7032
Medications	€143.58	€156.96	€361.75	€780.25	€324.22
Visits^b	€138.81	€178.36	€220.51	€284.96	€210.54
Clinical biology^c	€64.54	€64.54	€64.54	€64.54	€64.54
Medical imaging^d	€882.78	€872.49	€936.27	€1253.65	€963.01
Total cost per stroke admission	€3710	€5643	€9555	€16,735	€8594

SOI: severity of illness, SD: standard deviation; LOS: length of stay
^aClaims data, average of €406.96 per day
^bApproximated by reimbursement tariff: calculated as €26.00 for days 1–5; €8.33 for days 6–12 and €4.16 thereafter
^cSee calculations Additional file 1: Table S1
^dSee calculations Additional file 2: Table S2

ISSN: 1472-6963