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Table 1 Patient characteristics for the study to assess the prediction of hospital length of stay (LOS) using unstructured data at the emergency department (ED)

From: The prediction of hospital length of stay using unstructured data

Characteristic Total
n 5,006
Age—mean ± SD 64.3 ± 26.3
Age category—n (%)  
  < 18 494 (9.9)
 Age ≥ 18 4512 (90.1)
Gender—n (%)  
 Male 2,333 (46.6)
 Female 2,673 (53.4)
Emergency LOS (hours)—Median (Q1–Q3) 7.2 (4.8–9.6)
Total (ED + hospital) LOS (days)—Median (Q1–Q3) 6.1 (3.7–11.0)
Intensive care patients—n (%) 378 (7.6)
Most frequent diagnoses—n (%)  
 Pneumonia (J189) 212 (4.2)
 Altered general health (R53 + 0) 188 (3.8)
 Shortness of breath (R060) 174 (3.5)
 Abdominal pain (R104) 122 (2.4)
 Femoral bone fracture (S7200) 121 (2.4)
Most frequent concepts—n (%)  
 Pain 4,921 (98.3)
 Blood pressure 4,568 (91.3)
 Capillary 3,521 (70.3)
 Abdomen 2,155 (43.0)
 Face 2,046 (40.9)
Type of hospital stay, n (%)  
 Pulmonology 871 (17.4)
 Digestive system 761 (15.2)
 Cardiovascular medicine (except cardiovascular catheterization) 503 (10.0)
 Trauma and orthopaedics 467 (9.3)
 Diseases of the nervous system (including stroke) 465 (9.3)
 Urology, nephrology 332 (6.6)
 Rheumatology 313 (6.3)
 Endocrinology 195 (3.9)
 Hematology 193 (3.9)
 Diagnostic or therapeutic catheterization 161 (3.2)
 Dermatology 134 (2.7)
 ENT, stomatology 128 (2.6)
 Toxicology, alcohol-related disease 122 (2.4)
 Psychiatry 107 (2.1)
 Multidisciplinary stays and known disease follow-up 89 (1.8)
 Obstetrics 51 (1.0)
 Infectiology 44 (0.9)
 Gynecology 38 (0.8)
 Other (chronic pain, ophtalmology, complex trauma, burn injury) 32 (0.6)