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Social networks described by online smokers: mean number of smokers per network and relation to respondent
| Immediate family | Mean=2.2 (SD=2.1), range =0,8 |
| Extended family / relatives | Mean=3.3 (SD=3.0), range =0,11 |
| Close friends | Mean=3.7 (SD=3.8), range =0,20 |
| Friends | Mean=4.6 (SD=5.0), range =0,20 |
| Acquaintances | Mean=6.4 (SD=10.0), range =0,50 |
| Co-workers | Mean=3.6 (SD=5.6), range =0,22 |
