Table 2. Respondent characteristics at baseline (Wave 1), unless otherwise noted.
| Jefferson High | Sunshine High | |
| Number of respondents | 624 | 1151 |
| Age | 16.1 (1.1) | 16.5 (0.9) |
| Range of grades | 9–11 | 10–11 |
| Male | 47.4% | 49.9% |
| Non-Hispanic Black | 0.0% | 21.3% |
| Hispanic | 0.8% | 40.6% |
| Household Income ($1 k) | 45.2 (26.7) | 33.7 (18.8) |
| Mean BMI (kg/m2, raw) | 21.9 (4.4) | 23.6 (4.7) |
| Mean BMI (integer, both time points) | 22.6 | 23.3 |
| Range of BMI (min – max) | 13.8–44.3 | 15.5–51.4 |
| Screen time (h/wk) | 14.9 (14.7) | 18.6 (15.3) |
| Active sport score | 1.5 (1.1) | 1.3 (1.1) |
| Total number of ties | 2201 | 2025 |
| Out-degree | 3.5 (2.3) | 1.8 (1.8) |
| Reciprocated ties | 1.4 (1.4) | 0.59 (0.94) |
| Transitive triplets | 2.6 (4.1) | 0.86 (2.18) |
| Sum of BMI similarities1 | 0.095 (0.357) | 0.041 (0.179) |
| BMI avg. similarity2 | 0.017 (0.092) | 0.015 (0.068) |
| Sum of screen time similarities | 0.060 (0.325) | −0.006 (0.244) |
| Screen time avg. similarity | 0.015 (0.090) | −0.005 (0.104) |
| Sum of active sport similarities | 0.111 (0.449) | 0.054 (0.330) |
| Active sport avg. similarity | 0.029 (0.129) | 0.021 (0.145) |
For continuous measures, mean values are given with standard deviations in parentheses. For categorical variables, percentages are given.
1
“Sum of BMI similarities” is the mean value for the total sum of BMI similarities between the actor and each of his or her alters.
2
“BMI average similarity” is the mean value for the average similarity between an actor and his or her alters.