Table 2. For each twin type, percentage of current smokers at each survey wave and percentage with any smokers among their friends by smoking status, at each survey wave (base: individual twins).
|
Twin type
|
||||
|---|---|---|---|---|
| MZ | DZS | DZO | Total | |
| Current smokers | ||||
| Wave 1 (%) | 12 | 14 | 17 | 14 |
| Wave 2 (%) | 20 | 25 | 26 | 23 |
| Wave 3 (%) | 26 | 31 | 31 | 29 |
| Wave 4 (%) | 19 | 21 | 24 | 20 |
| Any smokers among friends | ||||
| Wave 1 | ||||
| Non-smokers (%) | 24 | 30 | 27 | 26 |
| Current smokers (%) | 90 | 94 | 84 | 90 |
| Total (%) | 32 | 39 | 37 | 35 |
| Wave 2 | ||||
| Non-smokers (%) | 46 | 43 | 48 | 46 |
| Current smokers (%) | 93 | 91 | 91 | 92 |
| Total (%) | 56 | 54 | 59 | 56 |
| Wave 3 | ||||
| Non-smokers (%) | 51 | 49 | 49 | 50 |
| Current smokers (%) | 90 | 88 | 86 | 88 |
| Total (%) | 61 | 61 | 61 | 61 |
| Wave 4 | ||||
| Non-smokers (%) | 44 | 47 | 45 | 45 |
| Current smokers (%) | 90 | 91 | 92 | 91 |
| Total (%) | 53 | 56 | 56 | 54 |
DZO=opposite-sex dizygotic or fraternal twins; DZS=same-sex dizygotic or fraternal twins; MZ=monozygotic or identical twins.