Table 3.

Mean values (standard error in parenthesis) of Self-reported health status (SRHS), Activity Daily Living (ADL), Hand Grip strength (HG), and Mini Mental State Examination (MMSE) within the categories obtained by cluster analysis (CA) in the 1905-Cohort

	Classification variables (1905-Cohort)
	SRHS	ADL	HG	MMSE
Frail (N = 876)	2.24 (0.030)	3.34 (0.030)	18.0 (0.152)	23.7 (0.170)
Very frail (N = 504)	2.46 (0.039)	1.02 (0.044)	13.2 (0.200)	19.6 (0.225)

For MMSE and HG, adjusted mean values were reported (see Results)