Table 1 Demographic, smoking, and e-cigarette use characteristics of participants who completed the 3-month follow-up assessment (n = 9272; 60.0% of ITT sample), by smoking status at the 3-month follow-up assessment
Variable | Smoking status at 3-month follow-up assessment | ||
|---|---|---|---|
Smoked in 30 days (n = 4905) N % | No smoking in past 30 days (n = 4367) N % | Total (n = 9272) N % | |
Demographic variables | |||
Sex | |||
Male | 2716 (55.4) | 2607 (59.7) | 5323 (57.4) |
Female | 2120 (43.2) | 1706 (39.1) | 3826 (41.3) |
Transgender | 27 (0.6) | 24 (0.5) | 51 (0.6) |
Missing | 42 (0.9) | 30 (0.7) | 72 (0.8) |
Age | |||
21–24 | 1339 (27.3) | 1731 (39.6) | 3070 (33.1) |
25–34 | 1689 (34.4) | 1413 (32.4) | 3102 (33.5) |
35–44 | 1003 (20.4) | 621 (14.2) | 1624 (17.5) |
45–54 | 539 (11.0) | 339 (7.8) | 878 (9.5) |
55–64 | 267 (5.4) | 236 (5.4) | 503 (5.4) |
≥ 65 | 68 (1.4) | 27 (0.6) | 95 (1.0) |
Race/Ethnicity | |||
Non-Hispanic, White | 3439 (70.1) | 2895 (66.3) | 6334 (68.3) |
Non-Hispanic, Black | 149 (3.0) | 143 (3.3) | 292 (3.1) |
Non-Hispanic, American Indian/Alaskan | 61 (1.2) | 54 (1.2) | 115 (1.2) |
Non-Hispanic, Asian, Hawaiian, or PIa | 514 (10.5) | 438 (10.0) | 952 (10.3) |
Non-Hispanic, two or more races | 1 (0.0) | 1 (0.0) | 2 (0.0) |
Hispanicb | 390 (8.0) | 427 (9.8) | 817 (8.8) |
Missing | 351 (7.2) | 409 (9.4) | 760 (8.2) |
Education | |||
Not HS graduate | 139 (2.8) | 115 (2.6) | 254 (2.7) |
GED | 186 (3.8) | 178 (4.1) | 364 (3.9) |
HS graduate | 689 (14.0) | 890 (20.4) | 1579 (17.0) |
Some college or associate’s degree | 1901 (38.8) | 1572 (36.0) | 3473 (37.5) |
Bachelor’s degree or higher | 1778 (36.2) | 1362 (31.2) | 3140 (33.9) |
Missing | 212 (4.3) | 250 (5.7) | 462 (5.0) |
Household income | |||
< $25,000 | 962 (19.6) | 935 (21.4) | 1897 (20.5) |
$25,000 to $74,999 | 1979 (40.3) | 1809 (41.4) | 3788 (40.9) |
≥ $75,000 | 1381 (28.2) | 1126 (25.8) | 2507 (27.0) |
Missing | 583 (11.9) | 497 (11.4) | 1080 (11.6) |
U.S. census region | |||
Northeast | 1109 (22.6) | 908 (20.8) | 2017 (21.8) |
South | 1785 (36.4) | 1640 (37.6) | 3425 (36.9) |
Midwest | 1159 (23.6) | 1010 (23.1) | 2169 (23.4) |
West | 813 (16.6) | 782 (17.9) | 1595 (17.2 |
Missing | 39 (0.8) | 27 (0.6) | 66 (0.7) |
Smoking and e-cigarette variables | |||
Age of first smoking | |||
≤ 11 years | 191 (3.9) | 126 (2.9) | 317 (3.4) |
12 to 14 years | 1177 (24.0) | 751 (17.2) | 1928 (20.8) |
15 to 17 years | 1938 (39.5) | 1552 (35.5) | 3490 (37.6) |
18 to 24 years | 1497 (30.5) | 1831 (41.9) | 3328 (35.9) |
≥ 25 years | 87 (1.8) | 94 (2.2) | 181 (2.0) |
Missing | 15 (0.3) | 13 (0.3) | 28 (0.3) |
Lifetime years of smoking | |||
≤ 1 year | 315 (6.4) | 513 (11.7) | 828 (8.9) |
1–5 years | 1138 (23.2) | 1485 (34.0) | 2623 (28.3) |
6–10 years | 1071 (21.8) | 870 (19.9) | 1941 (20.9) |
11–20 years | 1265 (25.8) | 784 (18.0) | 2049 (22.1) |
≥ 20 years | 1029 (21.0) | 601 (13.8) | 1630 (17.6) |
Missing | 87 (1.8) | 114 (2.6) | 201 (2.2) |
Number of smoking days in 30 days prior to baseline | |||
1–9 days | 468 (9.5) | 819 (18.8) | 1287 (13.9) |
10–19 days | 456 (9.3) | 686 (15.7) | 1142 (12.3) |
20–29 days | 1031 (21.0) | 1085 (24.8) | 2116 (22.8) |
30 days | 2950 (60.1) | 1777 (40.7) | 4727 (51.0) |
Cigarettes smoked per day at baseline | |||
1–9 cigarettes per day | 2224 (45.3) | 2626 (60.1) | 4850 (52.3) |
10–19 cigarettes per day | 1609 (32.8) | 1134 (26.0) | 2743 (29.6) |
≥ 20 cigarettes per day | 1072 (21.9) | 607 (13.9) | 1679 (18.1) |
Days of JUUL use in past 30 days at 3 months | |||
0 days | 35 (0.7) | 13 (0.3) | 48 (0.5) |
1–9 days | 394 (8.0) | 275 (6.3) | 669 (7.2) |
10–19 days | 725 (14.8) | 356 (8.2) | 1081 (11.7) |
20–29 days | 1040 (21.2) | 704 (16.1) | 1744 (18.8) |
30 days | 2476 (50.5) | 2710 (62.1) | 5186 (55.9) |
Missing | 235 (4.8) | 309 (7.1) | 544 (5.9) |
Current use of an e-cigarette other than JUUL | |||
Yes | 568 (11.6) | 407 (9.3) | 975 (10.5) |
No | 4335 (88.4) | 3958 (90.6) | 8293 (89.4) |
Missing | 2 (0.0) | 2 (0.0) | 4 (0.0) |
Place of first JUUL SK purchase | |||
Retail store | 1914 (39.0) | 2346 (53.7) | 4260 (45.9) |
JUUL website | 2991 (61.0) | 2021 (46.3) | 5012 (54.1) |
Bought JUUL SK ‘to help me quit smoking’ | |||
Yes | 4069 (83.0) | 3670 (84.0) | 7739 (83.5) |
No | 835 (17.0) | 696 (15.9) | 1531 (16.5) |
Missing | 1 (0.0) | 1 (0.0) | 2 (0.0) |
Primary JUULpod flavor used in past 30 days (at 3 months) | |||
Virginia Tobacco | 529 (10.8) | 371 (8.5) | 900 (9.7) |
Mint | 863 (17.6) | 1008 (23.1) | 1871 (20.2) |
Mango | 1107 (22.6) | 1168 (26.7) | 2275 (24.5) |
Crème | 258 (5.3) | 191 (4.4) | 449 (4.8) |
Fruit | 202 (4.1) | 127 (2.9) | 329 (3.5) |
Cucumber | 242 (4.9) | 193 (4.4) | 435 (4.7) |
Classic Tobacco | 138 (2.8) | 40 (0.9) | 178 (1.9) |
Menthol | 187 (3.8) | 119 (2.7) | 306 (3.3) |
Equal use of 2+ flavors, no primary | 1087 (22.2) | 838 (19.2) | 1925 (20.8) |
Missing | 292 (6.0) | 312 (7.1) | 604 (6.5) |
JUULpod flavors used in past 30 days (at 3 months) | |||
Only used JUUL tobacco flavorsc | 472 (9.6) | 277 (6.3) | 749 (8.1) |
Only used JUUL characterizing flavorsd | 3209 (65.4) | 3194 (73.1) | 6403 (69.1) |
Used both tobacco and characterizing flavors | 941 (19.2) | 591 (13.5) | 1532 (16.5) |
Missing | 283 (5.8) | 305 (7.0) | 588 (6.3) |