(We also tracked even multiples of 5, but the results were conceptually similar, so we concentrate on heaping at intervals of 10.) For each participant, we computed the proportion of days demonstrating digit bias, and expressed this using Whipples index (Denic et al., 2004), which indicates the factor by which the proportion of rounded values exceeds that expected from a random distribution of values
This includes e-cigarettes and personal vaporizers, and cannabis
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Vaping, as its called, gives you most of the buzz of a real cigarette without the horrible downsides like inhaling smoke, smelling up a room, or having to taste your cigarette for the next few hours