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Table 5 Secondary diagnosis codes occurring more frequently in SOI 3 and SOI 4

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

Occurring significantly more frequently in SOI 4 SOI 1 N = 52 SOI 2 N = 1233 SOI 3 N = 797 SOI 4 N = 431 p-valueb
 Pneumonia 0% 0% 6% 30% < 0.0001
 Pneumonitis 0% 0% 4% 28% < 0.0001
 Palliative care 2% 3% 7% 20% < 0.0001
 DNR status 0% 1% 7% 16% < 0.0001
 Intracranial haemorrhage 0% 0% 6% 15% < 0.0001
 Feeding problems, malnourishment 0% 0% 1% 12% < 0.0001
 Renal insufficiency (acute and chronic) 0% 0% 2% 7% < 0.0001
Occurring significantly more frequently in SOI 3 and SOI 4 SOI 1 N = 52 SOI 2 N = 1233 SOI 3 N = 797 SOI 4 N = 431 p-valuec
 Infection 2% 2% 33% 65% < 0.0001
 Neurologic complicationsa 0% 1% 15% 40% < 0.0001
 Urinary tract infection 0% 1% 22% 29% < 0.0001
 Anaemia 0% 5% 13% 27% < 0.0001
 Rehabilitation 0% 7% 17% 25% < 0.0001
 Heart failure and heart decompensation 0% 0% 15% 23% < 0.0001
 Hypokalaemia 0% 3% 14% 20% < 0.0001
 Pulmonary heart disease 0% 0% 5% 8% < 0.0001
 Oesophagitis 0% 1% 3% 8% < 0.0001
  1. SOI: severity of illness, DNR: do not resuscitate
  2. aUnconsciousness, coma, cerebral compression, cerebral oedema
  3. bp-value for Likelihood Ratio test type 3 from a Poisson Log model: SOI 4 versus SOI 1, SOI 2 and SOI 3 combined
  4. cp-value for Likelihood Ratio test type 3 from a Poisson Log model: SOI 3–4 combined versus SOI 1–2 combined