Table 1 Medical diseases leading to hospitalization

Cardiovascular disease

Heart failure, infectious, inflammatory, ischemic, valvular diseases, and venous or arterial system diseases

Pulmonary disease

Infectious, inflammatory and vascular damage of lungs or pleura

Neurologic disease

Degenerative and ischemic damage of the central nervous system

Renal disease

All processes responsible of acute or chronic reduction of renal function

Gastrointestinal disease

Hepatic damage with liver dysfunction, biliary damage due to infectious, inflammatory or dysplastic processes with and without jaundice and gallstones, acute and chronic pancreatitis, infectious, inflammatory or dysplastic processes of stomach and bowel, including diverticulitis

Hematologic disease

All processes leading to alterations of blood cells, excluding post-hemorrhagic anemia

Post-surgery condition

All patients who underwent any recent operation on any organ

Musculoskeletal disease

All processes leading to altered function of bone and muscles

Cutaneous disease

All processes altering the skin