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Table 2.

Demographic, cigarette consumption, and nicotine dependence of participants enrolled in study 4, which investigated the variation of plasma NMR in ad libitum smokers over 44 weeks

VariableDescriptive statistics
43 
Sex 
 Female, n (%) 14 (32.6) 
 Male, n (%) 29 (67.4) 
Race 
 Asian, n (%) 4 (9.3) 
 Black, n (%) 4 (9.3) 
 Mixed, n (%) 5 (11.6) 
 White, n (%) 30 (69.8) 
Age 
 Mean (SD) 37.6 (12.1) 
 Range 20–61 
BMI, kg/m2 
 Mean (SD) 25.6 (5.7) 
 Range 16.5–47.3 
CPD 
 Mean (SD) 19.2 (7.7) 
 Range 10–40 
  ≤10, n (%) 3 (7.0) 
  11–20, n (%) 28 (65.1) 
  21–30, n (%) 9 (20.9) 
  >31, n (%) 3 (7.0) 
TFC 
 Mean (SD) 17.0 (16.9) 
 Range 1–60 
FTND 
 Mean (SD) 5.6 (2.0) 
 Range 1–10 
NDSS overall score 
 Mean (SD) −0.08 (0.97) 
 Range −1.93–1.89 
VariableDescriptive statistics
43 
Sex 
 Female, n (%) 14 (32.6) 
 Male, n (%) 29 (67.4) 
Race 
 Asian, n (%) 4 (9.3) 
 Black, n (%) 4 (9.3) 
 Mixed, n (%) 5 (11.6) 
 White, n (%) 30 (69.8) 
Age 
 Mean (SD) 37.6 (12.1) 
 Range 20–61 
BMI, kg/m2 
 Mean (SD) 25.6 (5.7) 
 Range 16.5–47.3 
CPD 
 Mean (SD) 19.2 (7.7) 
 Range 10–40 
  ≤10, n (%) 3 (7.0) 
  11–20, n (%) 28 (65.1) 
  21–30, n (%) 9 (20.9) 
  >31, n (%) 3 (7.0) 
TFC 
 Mean (SD) 17.0 (16.9) 
 Range 1–60 
FTND 
 Mean (SD) 5.6 (2.0) 
 Range 1–10 
NDSS overall score 
 Mean (SD) −0.08 (0.97) 
 Range −1.93–1.89 
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