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. Author manuscript; available in PMC: 2021 Aug 10.
Published before final editing as: Tob Control. 2020 Feb 10:tobaccocontrol-2019-055475. doi: 10.1136/tobaccocontrol-2019-055475

Table 1.

Means and Standard Deviations for Outcome Variables by Product Type.

Own-Brand Cigarette JUUL IQOS
Pre-Directed Post-Directed Pre-Ad Lib Post-Ad Lib Pre-Directed Post-Directed Pre-Ad Lib Post-Ad Lib Pre-Directed Post-Directed Pre-Ad Lib Post-Ad Lib
Outcome Variables Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD
Plasma NicotineA 2.1 0.2 20.4 11.4 8.8 3.6 21.0 10.2 2.2 0.7 9.8 4.9 4.3 1.8 11.5 9.3 2.1 0.2 12.7 6.2 5.4 1.7 11.3 8.0
COA 5.2 2.4 8.7 2.5 8.8 2.8 16.6 7.0 5.5 2.4 5.1 2.3 5.3 2.4 4.7 1.9 5.3 2.0 4.9 1.8 4.6 1.8 4.3 1.4
QSU
Factor 1B,C 24.8 8.2 13.2 10.7 21.2 8.9 11.5 10.2 24.7 7.5 20.1 9.3 21.7 9.3 17.8 10.6 25.1 8.2 16.0 9.3 20.4 8.5 14.4 9.7
Factor 2C 11.7 8.3 6.9 7.4 9.7 7.4 5.5 7.6 10.3 8.3 8.1 7.8 9.5 7.5 6.5 7.2 12.5 8.4 6.6 7.8 9.1 8.6 6.6 8.9
HH
Anxious 46.3 32.5 24.8 30.6 22.1 22.8 19.4 27.5 42.8 31.9 24.4 31.8 20.8 30.1 20.4 27.0 44.5 34.9 28.4 33.9 17.2 27.2 28.4 32.6
CravingA 75.2 30.7 34.9 35.0 55.2 30.5 25.5 29.2 70.5 30.9 49.3 36.0 54.0 38.0 53.9 34.9 73.5 33.5 42.9 31.8 53.8 29.9 36.2 32.1
DepressionC 21.4 28.3 9.8 16.8 11.5 21.5 8.8 13.6 15.1 20.9 8.8 16.6 8.1 17.0 8.2 16.3 20.5 26.1 15.1 22.6 10.6 20.1 11.5 21.7
Diff ConcentrateC 28.2 26.4 18.5 20.4 18.1 20.8 10.4 18.1 37.6 30.1 17.3 19.9 15.5 22.5 17.8 25.8 30.0 31.9 24.4 29.9 16.8 20.6 18.9 27.0
Drowsy 35.2 25.0 28.7 26.1 24.9 24.3 23.4 26.9 33.8 28.2 21.4 24.6 25.9 31.1 25.3 27.0 31.9 33.9 29.4 26.5 23.4 24.6 27.4 29.8
Hunger 39.9 22.7 31.9 24.4 34.8 25.9 39.8 30.7 43.2 29.8 35.6 33.3 39.5 35.9 58.4 29.0 43.0 35.5 30.2 25.5 37.7 29.0 53.2 31.9
ImpatientC 42.1 28.3 23.9 27.3 26.9 29.3 25.5 28.2 41.0 30.6 25.9 31.0 31.4 28.9 31.8 30.5 51.4 31.0 25.1 30.9 29.7 30.3 27.2 27.0
IrritableC 37.4 31.0 14.9 17.2 14.1 16.0 14.6 22.0 34.5 31.1 18.4 22.1 15.4 22.3 15.1 26.4 38.7 33.3 19.8 26.3 16.8 21.0 16.8 24.1
RestlessA 40.8 29.4 19.7 24.8 27.7 27.2 21.5 28.1 30.2 25.5 26.9 25.9 17.9 25.7 24.7 27.6 38.9 31.8 19.7 24.6 33.4 31.4 27.1 28.4
Sweets 24.2 30.7 16.8 21.4 18.8 25.8 17.9 21.3 27.4 33.3 20.3 27.2 20.7 28.1 17.4 24.0 24.8 28.3 16.4 25.7 23.8 27.9 20.5 27.0
UrgeA 76.5 25.2 39.2 34.8 54.4 27.6 24.9 25.7 67.2 29.9 48.8 31.9 46.9 33.3 50.0 31.1 74.7 31.5 46.2 29.5 56.9 27.8 38.0 31.8
DEV
Awake 40.9 31.7 45.1 31.3 33.8 29.9 28.1 29.6 36.5 30.6 34.5 27.4
Calm 60.9 36.0 60.7 35.3 47.9 31.9 46.6 29.7 54.4 31.5 43.2 34.5
Concentrate 43.8 30.8 42.0 34.3 24.5 26.3 27.5 26.3 38.5 33.7 27.8 27.1
Dizzy 40.7 33.4 30.1 36.2 33.7 33.5 19.4 27.2 36.4 34.8 26.9 25.8
PleasantB 81.4 29.8 81.9 24.9 50.4 31.6 50.6 31.2 58.8 36.0 58.9 34.4
Reduced Hunger 41.9 29.9 33.0 27.7 35.2 27.4 37.1 31.0 29.2 28.8 34.3 26.1
Right Now 62.8 37.7 44.1 37.7 45.4 32.7 35.5 29.1 47.2 39.1 37.5 33.5
SatisfyB 84.3 24.4 83.7 24.5 47.0 33.2 46.5 31.5 58.8 30.9 58.8 33.3
Sick 4.1 7.5 2.6 5.2 8.1 14.2 7.8 14.4 9.5 19.0 10.5 16.8
Taste goodB 77.7 29.5 74.0 32.1 50.5 32.6 51.2 30.7 54.6 36.4 49.8 35.7

Means that are significantly different from baseline are presented in bold. Items that are significantly different from own-brand cigarettes at that time point are underlined. Note: CO, expired air carbon monoxide; QSU, Tiffany-Drobes Questionnaire of Smoking Urges-Brief; HH, Hughes-Hatsukami Withdrawal VAS Scale; DEV, Direct Effects of Vaping Questionnaire;

A

significant interaction,

B

significant main effect of condition, and

C

significant main effect of time.