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Table 2 Product use summary

From: Nicotine delivery, tolerability and reduction of smoking urge in smokers following short-term use of one brand of electronic cigarettes

  Controlled Use Period Ad Lib Use Period
E-Cigarette Puffs Pre-to-Post Use Weight Difference (g) Puffs Pre-to-Post Use Weight Difference (g)
2.4 % nic + Gly 50.0 (50–51) 0.2251 ± 0.0408 52.3 (5–128) 0.1467 ± 0.0843
N = 23
2.4 % nic + Gly/PG 50.0 (50–51) 0.2349 ± 0.0633 55.4 (4–136) 0.1445 ± 0.0880
N = 23
2.4 % nic + Gly + menthol 50.0 (50–51) 0.2421 ± 0.0477 58.0 (8–140) 0.1604 ± 0.0827
N = 23
1.6 % nic + Gly 50.0 (50–51) 0.2238 ± 0.0399 60.3 (8–112) 0.1738 ± 0.0937
N = 23
1.6 % nic + Gly/PG 50.0 (50–51) 0.2570 ± 0.0433 49.5 (3–118) 0.1194 ± 0.0675
N = 23
  Puffs Cigarettes Smoked Puffs Cigarettes Smoked
Tobacco Cigarette 10.5 (9–13) 1.0 (NA) 38.6 (16–103) 3.6 (2–7)
N = 24
  1. Values for puff count and cigarettes smoked are presented as mean (range). Values for the pre-to-post weight differences are presented as mean ± SD
  2. nic nicotine, Gly glycerine, PG propylene glycol