Table 2 Characteristics of patients and divided according to the size of hospital.

Age, mean (SD)

0.001 ^{a, b, c}

Age group

< 0.005 ^{a, b}

   < 70 years, %

   ≥ 70 years, %

Gender, %

0.580

   Men

   Women

Distribution of patients within some specialities, %

   Medicine

0.092

   Surgery

0.022 ^{b, c}

   Orthopaedics

0.018 ^d

   Psychiatry

0.001 ^{a, b, c}

Distribution of patients according to some diagnosis categories, %

   Pulmonary

< 0.0005 ^{a, b}

   Cardiovascular

< 0.0005 ^{b, c}

   Infectious

0.003 ^{b, c}

   Gastrointestinal

< 0.0005 ^{a, b, c}

   Neurological

0.139

   Orthopaedic

< 0.0005 ^{a, b, c}

   Psychiatric

< 0.0005 ^{a, b, c}

   Oncological

< 0.0005 ^{b, c}