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. 2024 Mar 7;10:e48186. doi: 10.2196/48186

Table 2.

Point estimates and confidence limits by outcome measures, survey pair, and cohort.

Survey pair and outcome 15 to 17-year-old 18 to 24-year-old

Sample, n (%), estimate (95% CI) Sample, n (%), estimate (95% CI)
Pair 1

TLCa 998
2363


Cigarette
2.2 (1.3-3.1)
6.7 (5.5-7.9)


e-Cigarette
8.2 (6.2-10.2)
15.0 (13.2-16.7)

CTOb 1041
2747


Cigarette
5.5 (3.7-7.4)
22.1 (19.9-24.2)


e-Cigarette
10.4 (7.9-12.9)
25.5 (23.1-27.9)
Pair 2

TLC 422
1019


Cigarette
1.2 (0.1-2.2)
6.7 (4.8-8.6)


e-Cigarette
7.0 (4.5-9.5)
17.4 (14.6-20.3)

CTO 1112
2876


Cigarette
6.1 (4.4-7.9)
22.3 (20.2-24.5)


e-Cigarette
14.0 (11.4-16.6)
27.5 (25.1-29.9)
Pair 3

TLC 555
1229


Cigarette
3.0 (1.4-4.7)
6.9 (5.2-8.7)


e-Cigarette
5.7 (3.6-7.8)
18.1 (15.5-20.7)

CTO 857
2113


Cigarette
5.7 (3.9-7.6)
25.0 (22.3-27.7)


e-Cigarette
12.4 (9.5-15.4)
28.8 (25.9-31.7)

aTLC: Truth Longitudinal Cohort.

bCTO: Continuous Tracker Online.