Quantification of Outdoor Mobility by Use of Accelerometer-Measured Physical Behaviour

Figure 1

Physical behaviour in the four groups based on the single question from NADL. The boxplots show the lower quartiles, median, and upper quartiles, and the whiskers show the minimum and maximum values, for the six outcomes of physical behaviour. 0: not walking outdoors; 1: did go walking outdoors with personal assistance; 2: did go walking outdoors alone with difficulty; 3: did go walking outdoors alone. Those reporting 0 were classified as “not outdoors” versus 1, 2, and 3 as “outdoors”; those reporting 0 and 1 were classified as “not outdoors alone” versus 2 and 3 as “outdoors alone.”