Table 1.

Participant characteristics

RYOPMMFMTotal
(n = 34)(n = 23)(n = 20)(N = 77)
Sex
 Male88.2% (30)73.9% (17)80.0% (16)81.8% (63)
 Female11.8% (4)26.1% (6)20.0% (4)18.2% (14)
Race
 African American29.4% (10)4.3% (1)55.0% (11)28.6% (22)
 Caucasian61.8% (21)87.0% (20)40.0% (8)63.6% (49)
 Other8.8% (3)8.7% (2)5.0% (1)7.8% (6)
Age
 Mean (SD)38 (12)41 (12)36 (11)39 (12)
Cigarettes per day
 Mean (SD)18 (6)22 (11)15 (4)18 (8)
Baseline plasma cotinine (ng/mL), mean (SD)
   NR197 (97)190 (88)
   ABS135 (82)128 (85)
   INT217 (110)201 (115)
FTND score
 Mean (SD)6 (2)6 (2)5 (2)6 (2)
NDSS overall score
 Mean (SD)0.12 (1.09)−0.08 (0.97)−0.36 (0.80)0.07 (0.99)

NOTE: Baseline plasma cotinine level for subgroups (n = 26 for RYO and n = 10 for PMM).

Abbreviation: Mean (SD), arithmetic mean with SD.