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Figure 2 | BMC Medical Research Methodology

Figure 2

From: Estimates of adherence and error analysis of physical activity data collected via accelerometry in a large study of free-living adults

Figure 2

Demonstration of activity monitor removal simulations during sleep and 10 waking hours from a single day. 24 HR: raw data for 24 hours of a day (in minutes). Simulation A2: demonstration of removing an activity monitor for sleep and 10 waking hours (zeroes imputed in the place of the raw data). Simulation B2: demonstration of measuring only waking hours (raw data from sleep was deleted) and removing an activity monitor for 10 waking hours (zeroes imputed in the place of the raw data). Simulation C2: demonstration of removing an activity monitor for sleep (but imputing a constant value of 23.1 counts/min) and 10 waking hours (zeroes imputed in the place of the raw data).

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