Table 3.

Multilevel, random-effects ordered logistic regression models (n=4472)

	No of products used*
	OR 95% CI
Cigarette type†
Non-menthol cigarettes	1.00 (Ref)
Menthol cigarette	1.25*** (1.11 to 1.41)
Sex
Males	1.00 (Ref)
Females	0.51*** (0.46 to 0.58)
Age	0.91*** (0.89 to 0.93)
Race/ethnicity
White	1.00 (Ref)
Hispanic/Latino	1.05 (0.92 to 1.19)
African American	1.47*** (1.11 to 1.94)
Asian	1.52*** (1.26 to 1.83)
Other‡	1.55*** (1.26 to 1.90)
Institution type§
2 years	1.00 (Ref)
4 years	1.15 (0.88 to 1.50)
Nicotine dependence¶
No	1.00 (Ref)
Yes	1.36*** (1.20 to 1.55)
Post hoc test
Interaction term for cigarette type and survey wave
Survey wave * cigarette type
Menthol * wave 1	1.00 (Ref)
Menthol * wave 2	0.98 (0.68 to 1.41)
Menthol * wave 3	1.02 (0.71 to 1.46)
Menthol * wave 4	1.06 (0.74 to 1.52)
Menthol * wave 5	1.17 (0.80 to 1.71)
Menthol * wave 6	0.95 (0.64 to 1.40)

Proportional odds model was used.

Bold indicates statistical significance; *p<0.05, **p<0.01, ***p<0.001.

^*Corresponds to the number of non-cigarette tobacco products used in the past 30 days.

^†Self-reported type (ie, menthol/mint; non-menthol/mint) of cigarette smoked in the past 30 days.

^‡Individuals who identify as American Indian/Alaska Native, Native Hawaiian/Pacific Islander or any other race/ethnicity.

^§Indicates if individuals attended a 2-year vocational/technical programme or 4-year college/university.

^¶Self-reported needing or craving a cigarette.