1. Changes in smoking behaviour over time.
Changes in smoking behaviour over time. Categories for this figure were generated as follows: (A) At the age of 31, the ‘non-smoker’ group includes all individuals who had never smoked. At the age of 46, the ‘non-smoker’ group includes individuals who had never smoked or who had quit smoking before the age of 31. (B) At the age of 31, the ‘quit smoking’ group includes participants who were ‘recent quitters’ or ‘former smokers’ at the time of evaluation. At the age of 46, the ‘quit smoking’ group includes those individuals who had smoked regularly at some point but had quit smoking between ages 31 and 46. (C) The ‘smoker’ group includes individuals identified as ‘current smokers’ at the time of evaluation.
Jaana Keto et al. Open Heart 2016;3:e000358
©2016 by British Cardiovascular Society