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Table 4 Partial correlation coefficients, adjusted for age and sex, between different indicators of health, functioning, and overall activity, and physical performance assessed at home or in the research center (RC), and physical activity (PA) assessed using questionnaire (Quest) or trunk- or thigh-worn accelerometers (acc.)

From: Assessing physical performance and physical activity in large population-based aging studies: home-based assessments or visits to the research center?

 Walking speedHandgrip strengthPA of at least moderate intensityTotal upright posture
 HomeRCHomeRCQuestTrunk accQuestThigh acc
 n = 995n = 898n = 993n = 901n = 991n = 441n = 987n = 485
Self-rated health−0.27***−0.35***−0.19***− 0.18***− 0.32***− 0.26***− 0.23***− 0.15**
Limited due to health & function− 0.34***−0.41***− 0.19***−0.16***− 0.29***−0.29***− 0.21***−0.19***
MMSE score0.21***0.11**0.12***0.11**0.09**0.040.11**0.05
ADL limitation−0.23***−0.30***−0.16***− 0.11**−0.14***− 0.11**−0.13***− 0.07
Difficulty walking 500 m−0.41***− 0.45***−0.19***− 0.17***−0.27***− 0.31***−0.26***− 0.25***
Mobility device−0.34***− 0.37***−0.17***− 0.08*−0.23***− 0.24***−0.20***− 0.06
Physical activity – single question0.42***0.46***0.22***0.22***0.49***0.38***0.43***0.31***
Neighborhood mobility0.32***0.30***0.15***0.09**0.38***0.31***0.27***0.22***
CES-D score−0.24***−0.23***−0.16***− 0.14***−0.18***− 0.06−0.18***− 0.06
Body Mass Index−0.20***− 0.32***0.040.10**−0.24***− 0.39***−0.23***− 0.40***
Days between home and RC visit0.03−0.02−0.01− 0.03
Monitor wear time0.10*0.03
  1. MMSE Mini-Mental State Examination, ADL Activities of Daily Living, and CES-D Center for Epidemiologic Studies for Depression
  2. Stronger correlations of paired home and lab result are bolded (difference in R ≥ 0.10), *p < .05, **p < .01, ***p < .001