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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Drug Alcohol Depend. 2016 Oct 11;169:33–40. doi: 10.1016/j.drugalcdep.2016.10.005

Figure 1.

Figure 1

Mean ±SEM plasma nicotine concentrations for 15 participants who completed three conditions; own brand (OB), loose-leaf tobacco vaporizer (LLTV), and an electronic cigarette (ECIG). Arrows indicate the onset of each 10-puff use bout (30 second inter-puff interval). Filled symbols indicate significant difference from baseline (only conducted on time points immediately post-bout. For these non-orthogonal comparisons, all ps <.025). Asterisk indicates a significant difference from OB using paired-samples t tests (only conducted on time points immediately post-bout (for these non-orthogonal comparisons, all ps used < .017).