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Table 3 Excess length of stay and mean costs of AEs for (potentially preventable) adverse events in the Netherlands in 2004

From: Direct medical costs of adverse events in Dutch hospitals

  Mean excess LOS in days (95% CI) Mean costs of LOS in € (95% CI) Mean costs of medical procedures in € (95% CI) Mean total costs of AEs in € (95% CI)
All AEs* (n = 456) 9.1 (7.6 – 10.5) 3852 (3081 – 5009) 703 (452 – 923) 4555 (3694 – 5790)
Deceased patients** 6.3 (5.3 – 8.3) 3962 (2582 – 4179) 524 (366 – 704) 4487(3065 – 4784)
University hospitals*** 10.1 (6.4 – 11.9) 5298 (3580 – 7943) 189 (53 – 282) 5487 (3673 – 8075)
General hospitals*** 8.9 (6.9 – 9.6) 3543 (2695 – 4273) 813 (556 – 969) 4356 (3357 – 5062)
All preventable AEs* (n = 182) 10.3 (7.8 – 13.2) 4778 (3081 – 7066) 507 (309 – 850) 5286 (3470 – 7786)
Deceased patients** 6.5 (4.4 – 9.7) 3763 (2266 – 4778) 765 (338 – 952) 4528 (2830 – 5370)
University hospitals*** 15.7 (8 – 21) 8054 (5041 – 11834) 45 (0 – 173) 8100 (5144 – 11944)
General hospitals*** 9.7 (7.4 – 13.2) 4436 (2609 – 7396) 556 (323 – 931) 4992 (3033 – 8188)
  1. * Psychiatric and obstetric patients and patients < 1 year were excluded. Day admissions were only excluded in the discharged patients. Figures were weighted for over sampling of deceased patients and of patients admitted to a university hospital.
  2. ** Subgroup analysis, sample is not weighted for overrepresentation of deceased patients in the sample.
  3. *** Psychiatric and obstetric patients and patients < 1 year were excluded. Day admissions were only excluded in the discharged patients. Figures were weighted for over sampling of deceased patients.