Table 2 Prevalence and descriptive statistics of cigarette, e-cigarette use, intentions to use e-cigarettes, cannabis consumption, and psychological distress

Demographics

Age, M (SD)

20.49 (2.51)

20.61 (2.74)

20.13 (1.52)

Household income, Median

100–150 k/year

100–150 k/year

100–150 k/year

Cigarette use

*Current use, %

11.0

9.4

16.0

 Never, %

75.8

81.6

70.7

 Ex-smoker, %

9.6

9.0

13.3

 Occasional smoker, %

8.3

7.2

12.0

 Daily user, %

2.5

2.2

4.0

E-cigarette use

Ever use, %

39.2

39.5

42.7

*Current use, %

11.0

7.5

4.5

  Never

55.7

59.2

56

  Past user

29.6

30.0

32.0

  Occasional user

2.9

1.8

6.7

  Frequent user

5.1

3.6

1.3

  Daily user

5.3

5.4

4.0

^aUsed to relieve anxiety, M (SD)

3.46 (1.4)

3.33 (1.44)

4.10 (1.13)

^bUsed to deal with stress, M (SD)

2.08 (1.09)

2.18 (1.14)

1.74 (0.89)

Intentions to use e-cigarettes

Intentions, %

  No intentions to use

77.6

78.4

74.8

  No plans to use or abstain

18.2

16.8

22.5

  Plan to use e-cigarette

3.4

3.7

2.3

  Strongly want to use e-cigarette

0.9

1.0

0.4

 ^cIntended length of time for future use, M (SD)

5.19 (3.51)

5.13 (3.50)

6.0 (3.83)

Exclusive versus dual use

Exclusive cigarette user, %

5.2

4.8

6.3

Exclusive e-cig user, %

5.2

6.1

2.5

Dual user, %

5.5

4.4

8.8

Cannabis

Past 30 Days Use, M number of days (SD)

9.47 (10.71)

9.12 (10.65)

10.48 (10.94)

Cannabis vaping, %

9.4

10

7.5

^dPsychological distress, M (SD)

Anxiety

3.31 (1.09)

3.40 (1.08)

3.04 (1.07)

Depression

2.93 (0.96)

2.99 (0.99)

2.76 (0.84)

Loneliness

2.93 (1.02)

2.98 (1.04)

2.08 (0.93)

Stress

3.65 (0.88)

3.72 (0.85)

3.45 (0.92)