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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Psychopharmacology (Berl). 2016 Oct 6;234(1):89–98. doi: 10.1007/s00213-016-4438-z

Table 2.

Smoking topography outcomes1.

Smoking Topography Indices Investigational Cigarettes
0.4 mg/g 2.4 mg/g 5.2 mg/g 15.8 mg/g
Total Puff Volume 411.88 ± 184.23 444.35 ± 200.09 370.72 ± 212.15 463.82 ± 211.94
Mean Puff Volume 38.62 ± 12.50 41.50 ± 12.60 35.58 ± 16.10 38.86 ± 15.12
Puff Duration 1.38 ± 0.36 1.39 ± 0.38 1.23 ± 0.45 1.35 v 0.40
Inter-puff Interval 21.29 ± 6.12 20.95 ± 8.24 27.77 ± 24.19 19.88 ± 9.34
Max Flow Rate 31.71 ± 9.00 34.33 ± 10.75 31.76 ± 11.87 34.14 ± 13.87
Puff Number 11.67 ± 3.12 11.25 ± 3.24 12.00 ± 4.98 15.00 ± 8.32
1

Data points represent means ± standard deviations for total and mean puff volume, mean puff duration, mean inter-puff interval, mean flow rate, and mean puff number observed during ad-libitum smoking of research cigarettes with varying nicotine content levels (0.4, 2.4, 5.2, 15.8 mg/g tobacco).