Table 5.

Pearson correlation coefficients between paired assessments of physical performance and physical activity (PA) at home and in the research center according to different subgroups of participants

		Walking speed		Handgrip strength		PA of at least moderate intensity		Total upright posture
		N	R	N	R	N	R	N	R
Age	75 years	430	0.63***	427	0.85***	225	0.41***	242	0.40***
	80 years	288	0.65***	285	0.85***	135	0.43***	153	0.15
	85 years	174	0.74***	176	0.86***	75	0.36**	84	0.29**
Sex	Male	385	0.68***	379	0.73***	176	0.31***	195	0.27***
	Female	507	0.69***	509	0.68***	259	0.50***	284	0.32***
MMSE score	25–30	786	0.68***	785	0.86***	385	0.40***	428	0.29***
	≤24	103	0.73***	100	0.79***	49	0.52***	50	0.35*
ADL limitation	No	780	0.65***	776	0.85***	390	0.40***	430	0.29***
	Yes	97	0.81***	99	0.86***	44	0.56***	47	0.37**
Mobility device	No	699	0.62***	702	0.84***	352	0.37***	383	0.31***
	Yes	186	0.71***	184	0.87***	80	0.45***	93	0.25*
Neighborhood mobility	Daily	554	0.62***	552	0.85***	269	0.32***	293	0.16*
	Less frequent	336	0.74***	335	0.86***	166	0.45***	185	0.44***
CESD score	0–15	745	0.67***	741	0.85***	375	0.42***	410	0.30***
	≥16	134	0.74***	136	0.89***	56	0.49***	63	0.25*
Season	Winter	200	0.63***	197	0.84***	103	0.46***	115	0.30**
	Spring	192	0.65***	189	0.85***	76	0.36**	90	0.28**
	Summer	192	0.78***	191	0.89***	89	0.53***	96	0.41***
	Autumn	308	0.68***	311	0.85***	174	0.34***	179	0.24**

MMSE Mini-Mental State Examination, ADL Activities of Daily Living, and CES-D Center for Epidemiologic Studies for Depression

*p < .05, **p < .01, ***p < .001