The predictability of in-home mobility.

<p>(a) Predictability of in-home mobility, defined as the proportion of correct estimates, is shown as a function of allowable error. For example, 95.8% of mobility estimates are within 1 of observed values, and over 99% of mobility estimates are within 3 of observed values. (b) The difference between estimated and observed probabilities are shown (black line) as a function of mobility. The <i>y = 0</i> line (gray dashed line) represents perfect predictability. The regression model over estimates 0's by 1%, underestimates 1's by 1.2%, and is off by less than 0.2% for the rest of the mobility values. Confidence intervals on the predictability have been omitted as they are too small to distinguish from the figure traces (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0090256#pone.0090256.s007" target="_blank">Tables S3</a>–<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0090256#pone.0090256.s008" target="_blank">S4</a>).