Table 1 Results of hierarchical linear regression analyses of cotinine measures regressed onto smoking factors

Characteristics, Adjusted R²

0.2

0.3

0.1

0.3

Age smoking fairly regularly (years)

1.8 (6.4)

−2.0 (3.7)

3.8 (3.3)

1.5 (26.0)

 Duration of non-daily smoking (months)

1.2 (5.4)

0.9 (3.2)

0.3 (2.8)

3.8 (22.0)

 Converted vs. native non-daily smoker

−29.3 (72.5)

−19.2 (42.6)

−10.2 (37.7)

− 46.1 (297.0)

 Menthol vs. regular preference

142.7 (62.8)^b

118.3 (36.9)^a

24.4 (32.6)

727.9 (257.2)^b

 NMR (log)^d

132.8 (88.2)

60.6 (51.8)

72.1 (45.8)

471.2 (361.2)

 Time to first cigarette after waking (minutes)

−0.4 (0.1)^a

−0.3 (0.1)^a

− 0.2 (0.1)^b

−1.9 (0.5)^a

 Nicotine dependence severity^c

−0.6 (17.0)

− 0.9 (10.0)

0.3 (8.8)

−5.4 (69.7)

Activities, Adjusted R²

0.3

0.2

0.3

0.3

 Performative

14.2 (10.0)

6.0 (6.5)

8.2 (4.7)

49.5 (42.7)

 Leisure

9.9 (6.7)

4.2 (4.4)

5.7 (3.2)

44.7 (28.5)

 Social

2.2 (8.5)

−5.5 (5.6)

7.6 (4.0)

−15.5 (36.2)

 Interactive

72.0 (19.3)^a

40.2 (12.7)^a

31.8 (9.1)^a

310.6 (82.6)^a

Emotions, Adjusted R²

0.3

0.2

0.4

0.2

 Positive

13.7 (7.4)

−0.34 (4.9)

14.0 (3.2)^a

34.1 (32.6)

 Negative

33.1 (8.7)^a

17.6 (5.7)^a

15.5 (3.8)^a

126.5 (38.3)^a

 Mixed

53.5 (29.4)

38.1 (19.4)

15.4 (12.9)

256.0 (130.2)

 Neutral

−3.4 (12.2)

1.1 (8.0)

−4.4 (5.4)

14.8 (54.0)