Table 1.

Behavioral, biochemical, and subjective measures for the experimental group presented by period, day, and cigarette

Own brandCrushNon-crush
Study day11551010151520202525303035
Cigarette123456789101112131415
Biomarkers
 CO session start, ppm26.8 (2.8)25.3 (2.2)22.3 (1.9)23.3 (2.2)23.5 (1.9)23.5 (2.2)22.9 (2.4)23.4 (2.4)
 CO boost, ppm6.2 (0.8)5.9 (0.8)5.9 (0.5)4.6 (0.5)4.0 (0.7)3.9 (0.8)4.1 (0.5)4.3 (0.5)3.7 (0.5)3.2 (0.6)3.7 (0.7)3.8 (0.6)3.5 (0.5)4.6 (0.5)3.9 (0.5)
 Nicotine, μg/mL1.706 (0.30)2.68 (0.54)2.49 (0.43)
 Cotinine, μg/mL4.00 (0.74)4.46 (0.69)3.74 (0.39)
 8-Oxo-dGuo, ng/mL3.52 (0.46)5.10 (1.00)4.52 (0.94)
Smoking topography
 Total puff volume, mL612.6 (74.6)517.9 (36.8)560.7 (42.7)600.4 (42.0)586.0 (42.1)630.7 (42.7)601.6 (41.0)614.3 (46.3)650.3 (47.9)664.4 (56.8)738.3 (50.4)648.7 (48.3)623.6 (57.5)658.0 (47.4)677.9 (57.1)
 Number of puffs11.2 (0.6)11.1 (0.8)12.6 (0.7)12.2 (0.7)11.9 (0.8)12.0 (0.6)12.4 (0.7)12.0 (0.8)12.0 (0.9)12.4 (1.2)13.3 (1.1)12.2 (0.9)10.9 (1.0)12.1 (0.7)12.7 (1.0)
 Puff duration, s1.7 (0.1)1.7 (0.1)1.6 (0.1)1.7 (0.1)1.5 (0.1)1.6 (0.1)1.6 (0.1)1.6 (0.1)1.7 (0.2)1.8 (0.2)1.7 (0.1)1.8 (0.2)1.9 (0.2)1.7 (0.1)1.8 (0.1)
 Interpuff interval, s30.1 (2.1)33.7 (3.2)31.4 (3.0)30.6 (3.0)32.5 (3.9)31.5 (2.6)29.4 (2.8)30.7 (3.2)34.4 (2.9)36.4 (4.0)29.8 (3.5)28.2 (2.9)31.6 (3.1)29.9 (3.1)29.4 (3.4)
Subjective ratings
 Strength: (very weak/very strong)61.2 (5.6)66.4 (5.5)65.2 (4.9)57.5 (6.3)65.9 (5.5)66.0 (5.1)63.5 (4.8)65.8 (5.1)63.8 (5.7)46.4 (6.5)50.8 (4.6)55.5 (4.7)51.7 (5.2)59.1 (4.5)53.3 (5.1)
 Harshness: (very mild/very harsh)42.5 (6.0)38.3 (5.9)43.4 (5.4)49.3 (5.3)51.6 (6.1)50.8 (6.7)49.7 (5.8)48.1 (5.9)46.0 (5.4)50.1 (6.7)43.5 (5.4)50.5 (5.2)42.5 (5.9)45.9 (5.4)45.4 (5.5)
Heat: (no heat/very hot)21.4 (5.3)21.7 (4.5)33.5 (6.0)38.3 (6.1)29.6 (5.5)34.5 (6.3)37.9 (6.7)41.2 (6.4)35.7 (6.4)31.5 (6.4)34.0 (5.7)30.0 (4.9)29.2 (4.7)36.6 (5.8)34.5 (5.1)
Draw: (easy/difficult)25.6 (5.6)26.0 (5.4)34.5 (5.6)32.5 (6.2)19.2 (4.1)26.8 (4.7)25.4 (5.1)26.5 (5.0)20.2 (4.2)33.6 (5.9)28.5 (5.7)26.8 (5.4)27.4 (5.7)31.5 (5.8)22.6 (4.7)
Taste: (very bad/very good)56.6 (5.8)61.3 (5.3)57.6 (4.9)49.6 (6.4)49.3 (6.0)47.3 (6.0)51.0 (5.1)48.2 (6.2)52.3 (5.8)29.3 (5.1)37.5 (5.6)38.9 (5.3)40.0 (5.4)40.4 (5.9)39.0 (5.7)
Satisfaction from smoking: (unsatisfying/satisfying)55.5 (6.2)54.5 (6.7)56.0 (6.0)51.0 (5.9)51.2 (6.3)48.8 (6.2)49.5 (6.5)54.9 (6.3)54.5 (6.6)35.7 (5.1)44.0 (5.6)42.2 (5.9)46.9 (5.7)45.6 (5.9)44.8 (5.6)
(Burned/Did not burn) too fast in too few puffs54.0 (5.7)53.1 (5.1)60.1 (5.8)61.1 (5.7)56.1 (6.5)64.5 (6.1)66.0 (5.9)71.0 (5.9)65.0 (6.4)60.7 (6.4)66.5 (5.9)65.6 (6.5)63.8 (6.5)67.0 (6.5)69.8 (6.2)
Mild taste/Not mild taste42.0 (6.1)52.3 (6.0)45.9 (5.9)49.6 (6.6)54.9 (7.0)53.5 (6.4)50.5 (5.9)56.2 (5.7)47.3 (6.2)51.2 (6.6)50.7 (5.0)45.3 (5.2)50.7 (5.1)49.9 (5.2)46.1 (5.9)
It (was/was not) too mild for me69.4 (5.1)66.7 (6.1)68.2 (6.1)63.5 (6.8)66.9 (5.5)61.4 (5.7)70.5 (5.0)65.5 (5.1)67.5 (5.5)53.0 (7.1)62.8 (5.2)58.3 (4.9)63.6 (5.1)63.8 (6.1)62.0 (5.1)
Smoke (seemed/did not seem) harsh67.5 (6.0)55.0 (6.7)55.8 (7.3)61.1 (7.0)61.4 (6.9)53.8 (7.3)55.0 (6.6)56.1 (5.9)58.2 (6.6)45.2 (7.1)51.5 (6.9)53.7 (6.8)54.8 (6.9)51.3 (5.7)55.5 (7.0)
(Did not leave/Left) a good aftertaste in my mouth46.6 (5.8)50.3 (6.8)50.2 (6.2)48.5 (6.8)52.2 (6.5)46.7 (6.5)46.4 (6.5)44.7 (5.9)50.2 (6.7)21.9 (4.7)32.3 (4.9)32.0 (5.4)34.0 (5.1)32.2 (5.4)32.0 (4.8)
Somehow it (seemed/did not seem) stale78.5 (5.7)72.5 (7.1)76.6 (6.2)76.9 (5.8)82.2 (5.1)79.3 (5.3)78.3 (5.7)78.1 (5.7)78.1 (5.9)53.5 (8.1)71.8 (6.4)68.6 (6.9)73.3 (6.6)72.0 (6.4)72.8 (6.9)
Smoke seemed (very weak/very strong)58.5 (5.4)62.5 (4.8)59.8 (5.5)49.7 (6.3)65.0 (5.5)64.9 (5.1)68.2 (4.2)64.4 (5.1)61.9 (5.6)47.8 (6.7)49.6 (5.2)56.3 (5.3)58.3 (5.5)57.5 (4.3)55.0 (5.2)
Smoke smell: (unpleasant/pleasant)49.7 (5.2)49.5 (6.5)51.3 (5.3)55.5 (5.8)51.5 (5.5)49.5 (6.0)51.9 (5.9)49.7 (5.6)53.9 (5.9)37.8 (5.0)40.6 (5.2)38.0 (5.8)45.5 (6.0)40.9 (6.1)39.4 (5.9)

NOTE: Values are adjusted means and SEs.