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Volume 28, Issue 3 , Pages 245-250 , April 2005

Prospective study of physical activity and physical function in early old age

Melvyn M. Hillsdon, PhD
- International Centre for Health and Society, Department of Epidemiology and Public Health, University College London, London, England
- Address correspondence and reprint requests to: Melvyn Hillsdon, PhD, International Centre for Health and Society, Department of Epidemiology and Public Health, University College London, 1-19 Torrington Place, London WC1E 6BT.
Eric J. Brunner, PhD
- International Centre for Health and Society, Department of Epidemiology and Public Health, University College London, London, England
Jack M. Guralnik, PhD
- Laboratory of Epidemiology, Demography, and Biometry, National Institute on Aging, Bethesda, Maryland
Michael G. Marmot, PhD
- International Centre for Health and Society, Department of Epidemiology and Public Health, University College London, London, England

Median (25th and 75th percentiles) physical function score at follow-up by baseline longstanding illness and baseline physical activity level. The line in the middle of each box represents the median,

Median (25th and 75th percentiles) physical function score at follow-up by baseline longstanding illness and baseline physical activity level. The line in the middle of each box represents the median, and the box extends from the 25th to the 75th percentile. The lines emerging from the box represent the 25th and 75th percentiles ±1.5 × the interquartile range.
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