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. Author manuscript; available in PMC: 2020 Apr 21.
Published in final edited form as: Proc ACM Interact Mob Wearable Ubiquitous Technol. 2018 Dec;2(4):153. doi: 10.1145/3287031

Table 3.

Characteristics of health behavior trend clusters. The observed avg ± Std dev of features used for clustering are indicated.

Cluster Color Description Mean Variance Slope* Percent of Participants
CVH WH Total
graphic file with name nihms-1575325-t0001.jpg Decliners Medium High Negative 14.62% 20.53% 17.35%
0.47 ± 0.13 0.37 ± 0.19 0.38 ± 0.19
graphic file with name nihms-1575325-t0002.jpg Healthy and Steady High Low Constant 29.23% 34.82% 31.82%
0.75 ± 0.12 0.14 ± 0.09 0.55 ± 0.08
graphic file with name nihms-1575325-t0003.jpg Improvers Medium High Positive 21.54% 17.86% 19.83%
0.58 ± 0.14 0.36 ± 0.17 0.75 ± 0.11
graphic file with name nihms-1575325-t0004.jpg Unhealthy and Steady Low Low Constant 35.38% 25.89% 30.99%
0.36 ± 0.13 0.1 ± 0.08 0.52 ± 0.07
*

For the slope, a normalized value lesser than 0.5 is considered negative slope, a normalized value greater than 0.5 is considered positive slope and a normalized value of approximately 0.5 is considered constant slope.