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
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Other volunteers were exposed to the smells, but one at a time, and a third group smelled the cigarette-and-gross-thing combo while awake
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Very low, Low, and Moderate levels accounted for 8.8%, 11.5%, and 9.2% of global records, respectively (Fig
