Table 1.
Socio-demographic variables, smoking status and network exposures, international survey of adolescents, 2013: percentages and numbers
| % or mean (std) | Number | |||
|---|---|---|---|---|
| City, Country (%) | ||||
| Namur, Belgium | 19.0 | 2018 | ||
| Tampere, Finland | 13.6 | 1443 | ||
| Hanover, Germany | 12.9 | 1373 | ||
| Latina, Italy | 19.2 | 2031 | ||
| Amersfoort, The Netherlands | 17.6 | 1862 | ||
| Coimbra, Portugal | 17.7 | 1877 | ||
| Gender (%) | ||||
| Female | 52.2 | 5531 | ||
| Male | 47.8 | 5073 | ||
| Age (years) | 15.2 (1.0) | |||
| Father’s education (%) | ||||
| Low | 21.5 | 2279 | ||
| Medium | 31.9 | 3379 | ||
| High | 29.1 | 3088 | ||
| Other unknown | 17.5 | 1858 | ||
| Mother’s education (%) | ||||
| Low | 17.9 | 1901 | ||
| Medium | 35.7 | 3788 | ||
| High | 31.5 | 3341 | ||
| Other-unknown | 14.8 | 1574 | ||
| Subjective socio-economic ranking (%) | ||||
| 5 or less | 22.8 | 2423 | ||
| 6 | 18.7 | 1980 | ||
| 7 | 27.5 | 2918 | ||
| 8 | 21.1 | 2241 | ||
| 9–10 | 9.8 | 1042 | ||
| Father not working last week (%) | 90.5 | 9601 | ||
| No | ||||
| Yes | 9.5 | 1003 | ||
| Mother not working last week (%) | ||||
| No | 80.6 | 8552 | ||
| Yes | 19.4 | 2052 | ||
| Family affluence ratio (%) | ||||
| ≤60 % | 7.5 | 795 | ||
| 61–90 % | 28.9 | 3063 | ||
| 91–120 % | 34.5 | 3656 | ||
| >120 % | 29.1 | 3090 | ||
| House/flat ownership (%) | ||||
| Owner | 81.7 | 8661 | ||
| Tenant-other | 18.3 | 1943 | ||
| Number of lowest socio-economic categories (%) | ||||
| 0 | 32.6 | 3454 | ||
| 1 | 28.9 | 3060 | ||
| 2 | 19.3 | 2048 | ||
| 3 | 11.6 | 1232 | ||
| 4 | 5.5 | 586 | ||
| 5 or more | 2.1 | 224 | ||
| Smoking status | ||||
| Tried smoking (%) | 46.6 (47.9) | 10,604 | ||
| Regular smoker (%) | 16.9 (36.02) | 10,604 | ||
| Standford nicotine dependence (score, 0–25) | 2.2 (4.6) | 10,604 | ||
| Exposure to smoking | ||||
| Distance to all alters (°) | 11.2 (4.3) | 10,199 | ||
| Distance to smoking alters (°) | 10.6 (4.5) | 10,196 | ||
| Relative distance to smokers (%) | 94.0 (12.2) | 10,196 | ||
| Regular smokers in degree 1 (%) | 17.0 (26.5) | 10,196 | ||
| Regular smokers in degree 2 (%) | 17.8 (22.9) | 10,196 | ||
| Regular smokers in degree 3 (%) | 17.5 (20.8) | 10,196 | ||
| Smokers in household (numbers) | 1.4 (1.3) | 10,604 | ||
| Coleman index of Homophily (−1, 1) | ||||
| Across parental education | 0.3 (0.67) | 10,196 | ||