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. 2020 Nov 5;23(8):1327–1333. doi: 10.1093/ntr/ntaa222

Table 2.

Association between geographic region and secondhand smoke exposure (NYTS, 2015–2018; n = 68 630)

At homea In a vehicleb
Adj OR
(95% confidence interval)
Adj OR
(95% confidence interval)
Geographic regionc
 Urban 1.00 (referent) 1.00 (referent)
 Non-urban 1.26*** (1.15–1.38) 1.50*** (1.35–1.65)
Sex
 Male 1.00 (referent) 1.00 (referent)
 Female 1.19*** (1.13–1.24) 1.33*** (1.27–1.40)
Grade leveld
 Middle school 1.00 (referent) 1.00 (referent)
 High school 0.92* (0.85–0.99) 1.04 (0.96–1.13)
Race/ethnicity
 Non-Hispanic White 1.00 (referent) 1.00 (referent)
 Hispanic/Latino 0.88** (0.81–0.95) 0.70*** (0.64–0.76)
 Non-Hispanic, Black 1.10 (0.99–1.22) 1.00 (0.91–1.11)
 Othere 0.98 (0.89–1.07) 0.81*** (0.73–0.90)
Tobacco use categoryf
 None 1.00 (referent) 1.00 (referent)
 E-cigarettes, only 1.38*** (1.22–1.57) 2.33*** (2.06–2.62)
 Other tobacco, only 2.24*** (2.02–2.50) 3.93*** (3.49–4.44)
 Both 3.68*** (3.20–4.23) 8.16*** (7.17–9.29)
Live with a tobacco userg
 No 1.00 (referent) 1.00 (referent)
 Yes 20.94*** (19.50–22.50) 7.72*** (7.23–8.26)
Year
 2015 1.00 (referent) 1.00 (referent)
 2016 1.00 (0.88–1.15) 0.97 (0.83–1.14)
 2017 0.92 (0.81–1.06) 0.80* (0.67–0.95)
 2018 0.91 (0.80–1.03) 0.80** (0.69–0.92)

Note: Bold indicates statistical significance at p < .05.

aSelf-reporting 1 to 7 days for the following question: “During the past 7 days, on how many days did someone smoke tobacco products in your home while you were there?”

bSelf-reporting 1 to 7 days for the following question: “During the past 7 days, on how many days did you ride in a vehicle when someone was smoking a tobacco product?”

cParticipants were categorized as non-urban if they lived in any area other than one of the 54 largest counties in the United States

dMiddle school reflects being in 6th through 8th grade; high school reflects being in 9th through 12th grade.

e“Other” is where a response was “Asian, non-Hispanic,” “American Indian/Alaska Native, non-Hispanic”; or “native Hawaiian and other Pacific Islanders, non-Hispanic”.

fPast 30-day use of any of the following: combustible cigarettes, electronic cigarettes, cigars, cigarillos, little cigars, pipe tobacco, bidis, snus, dissolvable, and hookah.

gSelf-reported living with anyone that using combustible cigarettes, electronic cigarettes, cigar products, hookah, pipe tobacco, and bidis.