The tissue factor expression on CD14++CD16-monocytes is a new markers in the Chinese Han older adult population with sepsis: A prospective study

•The immune status of the older adult sepsis is different from young patients, which may be manifested in the expression of molecules on monocytes.•Tissue factor, an important factor in the coagulation process, plays an important role in older adult sepsis on the expression of monocyte surface.•The status of human peripheral blood monocyte could be an important indicator of the prognosis of older adult patients with sepsis.