Table 2:
Characteristics of Participants at Year 1 and Year 3 (N = 160)
| Year 1 | Year 3 | p-value | |
|---|---|---|---|
| Age; in years, Mean (SD) | 13.35 (0.33) | - | - |
| Gender, being female; n (%) | 76 (47.50) | ||
| Pocket money in British pounds; Mean (SD) | 8.04 (6.89) | - | - |
| Having anyone else smoking at home; n (%) | 65 (40.63) | - | - |
| Smoking behavior, being a smoker; n (%)a | 20 (15.27) | 37 (28.24) | < 0.001 |
| Popularityb; Mean (SD) | 0.04 (0.002) | 0.03 (0.002) | 0.001 |
| Cohesion exposurec; Mean (SD) | 13.88 (1.99) | 26.36 (2.92) | < 0.001 |
| Proximity exposurec; Mean (SD) | 11.04 (0.30) | 24.75 (0.38) | < 0.001 |
Note. Years 1 and 3 were compared using t-test statistics for continuous variables and Chi square tests for categorical variables.
a
Both occasional and regular smokers are considered smokers.
b
Popularity is measured with in-degree centrality.
c
Cohesion exposure and proximity exposure can range from 0 to 100.