Table 2.

Comparison between frailty and intrinsic capacity.

	Frailty	Intrinsic capacity (IC)
Definition	Progressive decline of physiological systems conferring increased vulnerability to stressors and exposing to the risk of adverse health outcomes	Composite of all mental and physical capacities
When	Geriatric condition	After the age corresponding to the median of the local life expectancy at birth
Time dimension	Cross-sectional assessment	Longitudinal assessment for tracking trajectories
Characteristics	Defined by deficits and abnormalities	Defined by reserves and residual capacities
Original purpose	Developed for addressing the unmet clinical needs of the older person	Developed to inform about public health strategies in the promotion of healthy ageing
Interventions	Comprehensive geriatric assessment, possibly within a network of integrated care	Comprehensive intervention based on integration of care and social services