respiratory diseases caused by smoking cigarettes and COPD (chronic obstructive pulmonary disease): MedlinePlus Medical Encyclopedia Image Health Problems Caused by Secondhand

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Survival analysis addresses the issue of incomplete information from individuals who may not have experimented with smoking before the end of the data collection.17 31 4046 Observations from these individuals are right censored and excluding these individuals, as happens in standard methodologies, distorts the distribution of event duration.17 47 Standard survival models implicitly assume that all individuals under observation will eventually experience the event of interest (smoking experimentation).17 19 However, this is very restrictive for smoking onset, as a share of individuals may never experiment with smoking