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J Aging Health. 1998 Nov;10(4):422-40.

Predictors of mobility and basic ADL difficulty among adults aged 70 years and older.

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Indiana University Center for Aging Research, USA.


We use data from the 1993-1995 Assets and Health Dynamics of the Oldest-Old survey to estimate predictors of onset of mobility difficulty, onset of basic activity of daily living (ADL) difficulty, and improvement to no mobility difficulty. Onset of mobility difficulty occurred among 20% of those with no difficulty at baseline (n = 2,857) and was most likely among those 85 years of age or over, women, those with a body-mass index of 30 or over, and those who reported lung disease, arthritis, frequent pain, and poor memory. For those with mobility difficulty at baseline (n = 1,871), improvement occurred among 24% and onset of basic ADL difficulty occurred among 25%. Improvement was more likely among those with difficulty in just one mobility item at baseline, and onset of ADL difficulty was most common among those with difficulty in three or more mobility items at baseline.

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