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Table 2 Study population

From: Drug-related admissions and hospital-acquired adverse drug events in Germany: a longitudinal analysis from 2003 to 2007 of ICD-10-coded routine data

  Year
  2003 2004 2005 2006 2007
In-patients (number) 11,912,797 11,205,770 11,269,412 11,978,011 12,244,671
PCCL (percentage)      
0 56.45 52.25 52.75 53.64 55.16
1 0.62 0.60 0.52 0.80 1.41
2 14.73 15.07 13.83 13.40 14.35
3 16.67 17.75 17.51 17.59 17.69
4 11.52 14.33 15.40 14.56 11.39
Sex (percentage)      
Male 45.40 45.33 45.65 45.95 45.96
Female 54.60 54.66 54.34 54.04 54.04
Age group (percentage)
<18 13.38 12.97 12.60 12.08 11.88
18 to 59 39.43 37.84 37.44 36.92 36.62
60 to 79 35.61 36.45 36.69 36.93 36.86
>79 19.84 21.65 22.41 23.52 24.13
Length of stay      
Mean (days) 7.31 7.51 7.29 7.35 7.26
Stdev (days) 3.15 3.16 3.03 3.05 3.03
  1. Characteristics of in-patients with a normal length of stay. PCCL is the patient clinical complexity level, a comorbidity measure used within the G-DRGs (0 = no complications or comorbidities, 4 = catastrophic complications or comorbidities). The figures published per DRG were weighted with the number of in-patients per DRG.
  2. The study sample for 2007 included only 1,964,313 in-patients with information on diagnoses.