When accounting for questions participants were not required to answer, the percentage of missing values for all variables did not exceed 20% (see Supplementary Table I)
Tohid H, Shenefelt PD, Burney WA, et al
They can use certain tobacco molecules in isolation, and they can "reconstruct" tobacco by other means, and sometimes this works, sometimes it doesnt
Think about this: tobacco smoke contains 100 fold the amount of diacetyl as any vape item (or more), yet smoking isn't being faulted for popcorn lung
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During coding, the frequency of each theme and subthemei.e., the number of physicians referencing a given topicwas recorded to illustrate thematic weight in the dataset