Table 1.
Participant Characteristics, n = 85 Participants and 950 d
| N | % | Mean | SD | Range | |
|---|---|---|---|---|---|
| Individual-level (n = 85) | |||||
| Race | |||||
| White | 48 | 56.47 | — | — | — |
| Non-white | 37 | 43.53 | — | — | — |
| Ethnicity | — | — | — | ||
| Hispanic or Latino | 19 | 22.35 | — | — | — |
| Not Hispanic or Latino | 66 | 77.65 | — | — | — |
| Sex at birth | — | — | — | ||
| Male | 32 | 34.43 | — | — | — |
| Female | 53 | 65.57 | — | — | — |
| Age | — | — | — | ||
| Younger than 18 | 52 | 61.18 | — | — | — |
| 18 or older | 33 | 38.82 | — | — | — |
| Perceived socioeconomic status | 85 | — | 4.22 | 1.46 | 1–7 (higher values = more poor) |
| Mean number of days participants used tobacco over the study period | 85 | — | 2.99 | 4.26 | 0–13 |
| Mean number of days participants were exposed to peers who use tobacco over the study period | 85 | — | 4.21 | 4.16 | 0–13 |
| Mean number of days participants were exposed to adults who use tobacco over the study period | 85 | — | 5.45 | 4.05 | 0–14 |
| Mean tobacco outlets within 50 m of activity space polylines per day | 85 | — | 2.80 | 1.99 | 0–9 |
| Mean number of tobacco outlet within 100 m of activity space polylines per day | 85 | — | 4.22 | 2.86 | 0–14 |
| Mean amount of time spent within 50 m of tobacco outlets per day (in minutes) | 85 | — | 7.12 | 10.27 | 0–74 |
| Mean amount of time spent within 100 m of tobacco outlets per day (min) | 85 | — | 16.48 | 31.38 | 0–273 |
| Day-level (n = 950) | |||||
| Daily tobacco use | |||||
| Days in which participants did not use tobacco | 716 d | 75.37 | — | — | — |
| Days in which participants did use tobacco | 234 d | 24.63 | — | — | — |
| Daily exposure to peers who use tobacco | |||||
| Days in which participants were not exposed to peers who use tobacco | 614 d | 64.70 | — | — | — |
| Days in which participants were exposed to peers who use tobacco | 335 d | 35.30 | — | — | — |
| Daily exposure to adults who use tobacco | |||||
| Days in which participants were not exposed to adults who use tobacco | 520 d | 54.91 | |||
| Days in which participants were exposed to adults who use tobacco | 427 d | 45.09 | — | — | — |
| Mean number of tobacco outlets within 50 m of activity space polylines per day | 950 d | — | 2.95 | 3.65 | 0–21 (higher values = increasing exposure) |
| Mean number of tobacco outlets within 100 m of activity space polylines per day | 950 d | — | 4.40 | 5.03 | 0–27 (higher values = increasing exposure) |
| Mean amount of time spent within 50 m of tobacco outlets per day (min) | 950 d | — | 7.55 | 19.95 | 0–339 (higher values = increasing exposure) |
| Mean amount of time spent within 100 m of tobacco outlets per day (min) | 950 d | — | 17.41 | 48.61 | 0–573 (higher values = increasing exposure) |