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. 2020 Jan 8;10:12. doi: 10.1038/s41598-019-55410-5

Table 2.

Comparison of puffing topography data between products within a user group.

User group Product Puff number (n)a Total puff volume (mL)a Mean puff volume (mL) Puff duration (s) Puff interval (s) Session Length (s)*
Mean (±SD) Tukey’s rankingb Mean (±SD) Tukey’s rankingb Mean (±SD) Tukey’s rankingb Mean (±SD) Tukey’s rankingb Mean (±SD) Tukey’s rankingb Mean (±SD) Tukey’s rankingb
1 n = 50 C651 17.3 (±5.9) b 682.8 (±224.7) b 41.3 (±12.7) b 1.5 (±0.5) a 18.8 (±10.6) b 289.5 (±85.7) b
THS2.4(T) 15.0 (±5.5) b 730.9 (±350.4) b

48.8

(±17.9)

a 1.4 (±0.5) a 17.1 (±20.7) b 195.6 (±87.2) c
IS1.0(T) 58.6 (±37.6) a 2347.2 (±1480.7) a 41.6 (±16.0) b 1.4 (±0.6) a 27.6 (±22.5) a 1064.8 (±104.8) a
2 n = 50 IS1.0(T) 63.6 (±36.2) 2503.1 (±1629.4) 41.2 (±17.0) 1.5 (±0.6) 23.3 (±17.3) 1030.7 (±88.8)
3 n = 52 C651 16.0 (±5.6) a 596.8 (±197.1) a 39.3 (±12.4) b 1.6 (±0.5) a 18.8 (±10.6) a 269.3 (±88.0) a
THP1.0(T) 15.4 (±7.4) a 731.3 (±437.6) a 46.6 (±16.8) a 1.6 (±0.5) a 11.1 (±5.8) b 150.4 (±40.5) b

aC651, THS2.4(T) and THP1.0(T) are stick-based products and therefore had a limited usage period compared to IS1.0(T).

bDifferent letters within a group indicate statistically significant differences (p < 0.05) between mean values.