Consistency of self-labelled smoking status over the four waves
| Wave 1 smoker-type label | Used same label waves 1–4 | Changed label at waves 2, 3, or 4 | |||||
|---|---|---|---|---|---|---|---|
| % | n | % | n | ||||
| Non-smoker | 57 | (1075) | 16 | (296) | |||
| Ex-smoker | <1 | (12) | 4 | (73) | |||
| Occasional | 1 | (22) | 9 | (179) | |||
| Light smoker | 2 | (33) | 7 | (127) | |||
| Heavy smoker | 2 | (44) | 2 | (42) | |||
| Overall | 62 | (1186) | 38 | (717) | |||