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Table 1 Baseline characteristics of the full sample and by baseline CPD (< 10 vs. 10+)

From: Comparative risk perceptions of switching to JUUL vs. continued smoking and subsequent switching away from cigarettes: a longitudinal observational study

Baseline Characteristic

Full Sample (N= 17,058)

<10 CPD Smokers

(N= 8,504)

10+ CPD Smokers

(N= 8,047)

Age, mean (SD)

32.8 (10.8)

30.1 (9.5)

35.6 (11.3)

Sex

Male

54.6% (N=9244)

55.8% (N=4718)

53.9% (N=4309)

Female

44.9% (N=7611)

43.5% (N=3681)

45.8% (N=3667)

Transgender

0.5% (N=89)

0.7% (N=63)

0.3% (N=23)

Race/ethnicity

Non-Hisp White

78.6% (N=12,554)

72.3% (N=5778)

85.1% (N=6413)

Non-Hisp Black

2.9% (N=457)

3.6% (N=290)

2.0% (N=153)

Non-Hisp Asian

5.6% (N=902)

7.8% (N=622)

3.5% (N=264)

Hispanic

8.4% (N=1342)

11.2% (N=895)

5.5% (N=413)

Other/multi

4.5% (N=721)

5.1% (N=406)

3.9% (N=296)

Education

High school or less

27.4% (N=4378)

22.6% (N=1804)

31.9% (N=2412)

Some college/AA

43.5% (N=6960)

41.7% (N=3325)

45.8% (N=3465)

Bachelor’s or more

29.2% (N=4666)

35.8% (N=2854)

22.4% (N=1693)

Income

<$50k

52.8% (N=7830)

52.8% (N=3910)

52.5% (N=3686)

$50-$100k

29.8% (N=4427)

28.6% (N=2118)

31.2% (N=2187)

>$100k

17.4% (N=2581)

18.7% (N=1384)

16.3% (N=1146)

Employment

Don’t work for pay

12.6% (N=2033)

11.4% (N=920)

13.8% (N=1054)

< 15 hrs/week

2.5% (N=408)

3.1% (N=248)

1.9% (N=148)

15-34 hrs/week

11.6% (N=1869)

13.4% (N=1082)

9.6% (N=732)

35+ hrs/week

73.3% (N=11,833)

72.0% (N=579)

74.6% (N=5692)

Average CPD over P30D, median (IQR)

9.0 (2.7-15.0)

2.7 (1.0-5.0)

15.0 (11.6-20.0)

Smoking days in P30D, median (IQR)

30.0 (20.0-30.0)

20.0 (9.0-28.0)

30.0 (30.0-30.0)

Smoking duration in years, median (IQR)

10.0 (4.0-19.0)

6.0 (3.0-12.0)

15.0 (8.0-23.0)

Smoking risk scorea, median (IQR)

63.8 (48.8-87.5)

52.5 (33.8-77.5)

75.0 (50.0-92.5)

JUUL risk scoreb, median (IQR)

20.0 (10.0-40.0)

18.8 (7.5-34.8)

25.0 (10.0-45.0)

Indirect comparative risk fractionc, median (IQR)

2.6 (1.7-5.0)

2.5 (1.6-5.0)

2.7 (1.7-5.3)

Direct comparative risk categoryd

 JUUL more/much more harmful:

0.4% (N=67)

0.5% (N=38)

0.3% (N=25)

 About the same:

9.7% (N=1565)

10.5% (N=849)

8.9% (N=672)

 JUUL less harmful:

62.9% (N=10,098)

64.0% (N=5167)

61.8% (N=4656)

 JUUL much less harmful:

27.0% (N=4330)

25.0% (N=2020)

29.0% (N=2183)

  1. Note: CPD Cigarettes per day, IQR Interquartile range, P30D Past 30 days, SD standard deviation
  2. aAverage of 4 items: chance (0-100%) of having lung cancer, other lung disease, heart disease, or premature death at some point if continue to smoke at current rate
  3. bAverage of 4 items: chance (0-100%) of having lung cancer, other lung disease, heart disease, or premature death at some point if switch completely to JUUL
  4. cSmoking risk score/JUUL risk score. Values < 1 indicate perceptions that JUUL is more harmful than smoking; values > 1 indicate perceptions that smoking is more harmful than JUUL
  5. d“In your opinion, is using the JUUL device less harmful, about the same, or more harmful than smoking cigarettes?” Assessed on a 5-point scale ranging from “much less harmful” to “much more harmful.”
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BMC Psychology

ISSN: 2050-7283

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