Table 2 Adjusted odds ratios of subsequent switching across baseline risk perceptions, among all baseline established smokers

Direct comparative risk

JUUL more/much more harmful

Ref.

--

--

About the same (vs. more/much more harmful)

0.94 (0.71 – 1.24),

p = 0.662

JUUL less harmful

(vs. about the same)

1.20 (1.12 – 1.27),

p < 0.001

JUUL much less harmful (vs. less harmful)

1.31 (1.26 – 1.37),

p < 0.001

Indirect comparative risk (continuous)

Linear term

--

1.007 (1.006 – 1.008),

p < 0.001

--

Quadratic term

0.9999 (0.9998 – 0.9999),

p < 0.001

Indirect comparative risk (categorical)

0 to <1

--

--

Ref.

1 to <2 (vs. 0 to <1)

1.05 (0.90 – 1.23),

p = 0.521

2 to <3 (vs 1 to <2)

1.12 (1.06 – 1.17),

p < 0.001

3 to <6 (vs 2 to <3)

1.11 (1.05 – 1.17),

p < 0.001

6 to 100 (vs 3 to <6)

1.16 (1.10 – 1.22),

p < 0.001

Sex

Male

Ref.

Ref.

Ref.

Female

1.00 (0.96 – 1.03),

p = 0.833

0.96 (0.93 – 1.00),

p = 0.031

0.96 (0.93 – 1.00),

p = 0.032

Transgender

0.80 (0.64 – 1.00),

p = 0.055

0.81 (0.64 – 1.02),

p = 0.077

0.81 (0.64 – 1.03),

p = 0.081

Race/ethnicity

Non-Hisp white

Ref.

Ref.

Ref.

Non-Hisp black

1.08 (0.97 – 1.20),

p = 0.158

1.10 (0.99 – 1.22),

p = 0.087

1.11 (1.00 – 1.24),

p = 0.051

Non-Hisp Asian

0.88 (0.81 – 0.95),

p = 0.001

0.86 (0.80 – 0.94),

p < 0.001

0.87 (0.80 – 0.94),

p < 0.001

Hispanic

0.97 (0.91 – 1.04),

p = 0.392

0.95 (0.89 – 1.01),

p = 0.095

0.96 (0.90 – 1.02),

p = 0.181

Other/multi

0.95 (0.87 – 1.03),

p = 0.228

0.95 (0.88 – 1.04),

p = 0.266

0.96 (0.88 – 1.04),

p = 0.345

Age

1.00 (1.00 – 1.00),

p = 0.853

1.00 (1.00 – 1.01),

p = 0.086

1.00 (1.00 – 1.01),

p = 0.181

Education

High school or less

Ref.

Ref.

Ref.

Some college/AA

0.88 (0.85 – 0.92),

p < 0.001

0.90 (0.87 – 0.94),

p < 0.001

0.90 (0.86 – 0.94),

p < 0.001

Bachelor’s or more

0.82 (0.78 – 0.86),

p < 0.001

0.83 (0.79 – 0.87),

p < 0.001

0.82 (0.78 – 0.86),

p < 0.001

Income

<$50k

Ref.

Ref.

Ref.

$50-$100k

1.07 (1.02 – 1.11),

p = 0.003

1.07 (1.03 – 1.12),

p = 0.001

1.07 (1.02 – 1.11),

p = 0.002

>$100k

1.16 (1.10 – 1.23),

p < 0.001

1.15 (1.09 – 1.21),

p < 0.001

1.14 (1.08 – 1.20),

p < 0.001

Employment

Don’t work for pay

Ref.

Ref.

Ref.

< 15 hrs/week

0.84 (0.74 – 0.95)

p = 0.006

0.81 (0.72 – 0.92),

p = 0.001

0.81 (0.71 – 0.91),

p = 0.001

15-34 hrs/week

0.95 (0.89 – 1.02),

p = 0.191

0.95 (0.88 – 1.02),

p = 0.147

0.94 (0.88 – 1.01),

p = 0.101

35+ hrs/week

1.08 (1.02 – 1.14),

p = 0.007

1.07 (1.01 – 1.13),

p = 0.016

1.07 (1.01 – 1.13),

p = 0.024

Average CPD over P30D

0.98 (0.98 – 0.99),

p < 0.001

0.98 (0.98 – 0.99),

p < 0.001

0.98 (0.98 – 0.99),

p < 0.001

Smoking days in P30D

0.98 (0.97 – 0.98),

p < 0.001

0.98 (0.97 – 0.98),

p < 0.001

0.98 (0.97 – 0.98),

p < 0.001

Smoking duration in years

0.98 (0.98 – 0.98),

p < 0.001

0.98 (0.98 – 0.98),

p < 0.001

0.98 (0.98 – 0.98),

p < 0.001