HLTH 252 Chapter Notes - Chapter 5: Covariate
14 Feb 2017
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Objectively measured physical activity and mortality risk among american adults. Limitation of previous studies use of self-reported measures ad they focus on longer bouts of activity w/o looking at sporadic or intermittent activities of a short duration. Study examined association b/w objectively measured light pa and moderate to vigorous pa and a reduced risk for all-cause mortality. People do not get enough mvpa (some do and it is usually walking for exercise or transport, sport or gardening) Common lpa= household chores, and personal care and shopping. 5,562 from 2003-2004 and 2005-2006 cycles of national health and nutrition exam survey (over. Measured over 4-7 days using actigraph am-7164 accelerometers. Age, sex, race, ses, diet, smoking and alcohol controlled for. Used home interviews, physical exam in mobile exam center and follow-up for mortality. Lots of people were excluded (mortality link could not be performed, missing covariate data, alcohol and dietary variables)
