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. Author manuscript; available in PMC: 2024 Oct 3.
Published in final edited form as: J Expo Sci Environ Epidemiol. 2023 Oct 5;34(5):802–813. doi: 10.1038/s41370-023-00606-1

Table 1.

Distribution of total logging time (hours) for sessions with geolocated one-minute PM2.5 measurements, and the percentage of total logging time (%) by location and wearing compliance for children and mother participants in the Child Lung Function Study

N sessions Mean Median Perc. 25th Perc. 75th
Total logging time (hours)
All participants 259 45 48 46 49
 Children participants 114 43 48 40 49
 Mother participants 145 46 48 47 49
Percentage of total logging time by location (%)
All participants
 Household vicinity 259 84 87 73 96
 Community boundaries 259 10 6 2 13
 Outside both boundaries (elsewhere) 259 7 1 0 11
Children participants
 Household vicinity 114 85 89 75 96
 Community boundaries 114 12 7 3 17
 Outside both boundaries (elsewhere) 114 3 0 0 2
Mother participants
 Household vicinity 145 83 83 72 96
 Community boundaries 145 8 5 2 12
 Outside both boundaries (elsewhere) 145 9 3 0 17
Percentage wearing compliance (%) 1
All participants 254 54 56 38 71
 Children participants 109 54 58 40 71
 Mother participants 145 53 54 37 71
1

Accelerometer data from the MicroPEM device was not available for 5 participants. During daytime hours after 4 GMT to before 21 GMT