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. Author manuscript; available in PMC: 2024 Jan 1.
Published in final edited form as: Health Place. 2021 Nov 18;79:102706. doi: 10.1016/j.healthplace.2021.102706

Table 1.

Total valid participants for each combination of TWSA method, environmental data layer, and mobility data input. Mean and standard deviation exposure outputs across the samples.

PO KDE DR
Enviro Data Layer Mobility Data Input N Exposure (mean) Exposure (std) N Exposure (mean) Exposure (std) N Exposure (mean) Exposure (std)
Point AllPoints 599 0.011 0.083 599 0.007 0.075 599 0.203 0.103
Stationary 584 0.025 0.106 588 0.01 0.025 589 0.098 0.118
InVehicle 591 0.123 0.103 591 0.064 0.053 591 0.616 0.197
Walking 569 0.159 0.231 583 0.077 0.104 582 0.228 0.184
Line AllPoints 599 0.005 0.006 599 0.002 0.003 599 0.11 0.047
Stationary 591 0.025 0.049 591 0.012 0.03 591 0.08 0.06
InVehicle 591 0.061 0.046 591 0.033 0.03 591 0.361 0.092
Walking 587 0.102 0.095 587 0.046 0.043 589 0.151 0.089
Area AllPoints 596 0.007 0.024 598 0.003 0.006 593 0.125 0.071
Stationary 536 0.029 0.086 567 0.01 0.025 557 0.088 0.104
InVehicle 588 0.062 0.057 590 0.021 0.021 573 0.339 0.118
Walking 489 0.106 0.138 544 0.051 0.073 500 0.167 0.154
Surface AllPoints 599 0.052 0.039 599 0.027 0.019 599 1.048 0.478
Stationary 591 0.289 0.408 591 0.152 0.285 591 0.796 0.515
InVehicle 591 0.536 0.386 591 0.227 0.156 591 3.165 0.983
Walking 587 1.012 0.827 587 0.465 0.363 590 1.468 0.878