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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: World Neurosurg. 2019 Feb 22;126:e241–e249. doi: 10.1016/j.wneu.2019.01.297

Table 1.

Participant demographic information and digital phenotyping data.

Demographics Total (n=105)
 Male (no., %) 48 (45.7)
 Age (mean, st. dev.) 52.0 (14.0)
 Surgery (no., %) 55 (52.4)
Site of Disease (no., %)
 Cervical 35 (33.3)
 Thoracic 6 (5.7)
 Lumbar 64 (60.1)
Passive Data Collection
 GPS Days (mean, st. dev.) 82.5 (68.4)
Active Data Collection
 Daily Survey Response Rate (mean, (25%,75%) quantiles) 43.4 (23.2,69.8)
 Weekly Survey Response Rate (mean, (25%,75%) quantiles) 73.2 (50.6,100.0)
Change in Pain Score
 All patients (mean start/end score) −1.3 (4.96 to 3.66)
Digital Phenotypes*
Daily (median, (25%, 75%) quantiles)
 Time spent at home (minutes) 927.1 (623.9, 1242.8)
 Distance travelled (meters) 51989.1 (18691.9, 97833.3)
 Radius of gyration (meters) 3218.8 (846.8, 9881.9)
 Maximum diameter (meters) 13828.1 (4867.5, 29382)
 Maximum distance from home (meters) 13296.5 (4612.7, 29285.7)
 Number of significant locations visited 2 (1, 3)
 Average flight length (meters) 236.0 (160.1, 334.9)
 Std. dev. of flight length (meters) 296.4 (173.3, 487.3)
 Average flight duration (seconds) 42.7 (32.0, 74.3)
 Std. dev. of flight duration (seconds) 98.2 (56.9, 257.1)
 Fraction of the day not moving 0.88 (0.79, 0.94)
 Significant location entropy 0 (0, 0.28)
 Missing GPS data (minutes) 1349.7 (1323.7, 1379.2)
 Circadian routine (0-low, 1-high) 0.59 (0.42, 0.71)
 Week end/day stratified circadian routine 0.61 (0.44, 0.73)
 Number of outgoing texts 4 (0, 14)
 Total outgoing text length (characters) 165 (0, 756)
 Texting outdegree 1 (0, 3)
 Number of incoming texts 4 (0, 13)
 Total incoming text length (characters) 188 (0, 689)
 Texting indegree 2 (0, 4)
 Text reciprocity 4 (0, 15)
 Text responsiveness 0.04 (0, 0.28)
 Number of outgoing calls 1 (0, 4)
 Total outgoing call lengths (seconds) 72 (0, 561)
 Call outdegree 1 (0, 3)
 Number of incoming calls 1 (0, 3)
 Total incoming call lengths (seconds) 75 (0, 619)
 Call indegree 1 (0, 2)
 Call reciprocity 0 (0, 2)
 Call responsiveness 0 (0, 0.44)
*

For detailed descriptions and definitions of the mobility and sociability digital phenotypes, see Barnett and Onnela (2016).