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. 2020 Jun 5;3(6):e203826. doi: 10.1001/jamanetworkopen.2020.3826

Table 1. Summary Statistics for Those Who Did Not Smoke or Vape at Baseline, Among Youths and Emerging Adultsa.

Wave 2 vaping status Vaped, % (95% CI)
No Yes Flavored Unflavored
Youths (12-17 y)
No. 7096 164 129 14
Ever tried cigarettes, wave 1 4.86 (4.24-5.57) 22.77 (15.79-31.67) 21.64 (14.64-30.78) 35.56 (10.63-71.91)
Smoked in past 30 d, wave 3 2.84 (2.40-3.35) 21.80 (16.16-28.73) 19.47 (13.82-26.71) 41.76 (14.80-74.74)
Male youths 51.18 (49.79-52.57) 56.69 (48.41-64.62) 57.19 (48.20-65.73) 42.83 (19.96-69.23)
Race
White 66.88 (64.15-69.51) 74.56 (68.05-80.14) 72.36 (64.74-78.88) 88.68 (58.33-97.77)
Black 15.28 (13.27-17.53) 7.84 (4.57-13.14) 7.49 (3.64-14.79) 6.82 (0.75-41.53)
Other 13.68 (12.28-15.21) 13.53 (8.94-19.95) 16.32 (10.56-24.37) 0
Hispanic 22.40 (19.66-25.41) 20.64 (14.96-27.77) 19.95 (13.98-27.66) 23.39 (7.74-52.63)
Parental education
<High school 17.18 (15.67-18.79) 18.78 (13.01-26.32) 20.11 (13.62-28.68) 20.94 (5.93-52.66)
High school graduate 17.35 (16.14-18.63) 19.58 (13.71-27.18) 18.43 (12.07-27.10) 29.31 (6.92-69.80)
Some college 30.79 (28.96-32.68) 30.60 (23.98-38.14) 34.14 (26.29-42.98) 4.69 (0.51-32.26)
≥College degree 34.17 (31.60-36.83) 31.04 (23.27-40.04) 27.32 (19.32-37.10) 45.07 (17.88-75.56)
Parental household income, $
<10 000 7.23 (6.21-8.40) 7.76 (4.36-13.46) 7.53 (3.83-14.27) 10.71 (2.06-40.67)
10 000-24 999 13.86 (12.64-15.19) 15.76 (11.23-21.67) 16.13 (10.33-24.30) 21.29 (3.53-66.65)
25 000-49 999 20.02 (18.78-21.32) 17.99 (12.08-25.94) 14.65 (8.83-23.31) 29.99 (9.57-63.43)
50 000-99 999 23.41 (22.15-24.72) 28.54 (21.19-37.23) 28.11 (20.24-37.60) 21.46 (5.50-56.17)
≥100 000 23.61 (21.61-25.73) 21.82 (14.33-31.77) 23.79 (15.61-34.50) 16.55 (3.44-52.46)
Emerging adults (18-24 y)
No. 4517 102 92 8
Ever tried cigarettes, wave 1 40.03 (38.00-42.10) 67.52 (54.51-78.29) 69.41 (56.08-80.13) 47.51 (11.97-85.77)
Established smoking, wave 3 5.34 (4.69-6.06) 21.91 (14.68-31.39) 23.79 (15.96-33.91) 8.17 (0.70-52.74)
Male emerging adults 47.00 (45.43-48.57) 65.73 (54.90-75.14) 62.68 (51.39-72.74) 93.84 (55.01-99.48)
Race
White 65.44 (62.53-68.24) 71.25 (59.28-80.83) 70.48 (57.92-80.55) 74.59 (31.84-94.86)
Black 15.50 (13.46-17.79) 11.38 (6.29-19.71) 10.93 (5.76-19.77) 16.52 (2.49-60.57)
Other 15.36 (13.46-17.49) 13.51 (6.94-24.66) 14.22 (7.00-26.76) 8.89 (0.77-55.08)
Hispanic 21.82 (19.29-24.57) 23.22 (14.82-34.45) 25.18 (15.92-37.43) 8.89 (0.77-55.08)
Any college at baseline 59.40 (57.26-61.51) 39.77 (29.69-50.81) 42.26 (31.37-53.97) 17.07 (2.76-59.86)
Household income, $
<10 000 24.17 (22.47-25.94) 22.85 (15.25-32.78) 24.48 (16.11-35.37) 0
10 000-24 999 20.14 (18.46-21.93) 23.87 (14.94-35.88) 24.64 (14.93-37.84) 19.94 (3.26-64.76)
25 000-49 999 16.89 (15.56-18.30) 14.82 (8.10-25.56) 13.13 (7.00-23.27) 31.14 (4.62-80.86)
50 000-99 999 15.40 (14.16-16.73) 12.83 (7.19-21.88) 13.59 (7.40-23.62) 7.77 (0.67-51.33)
≥100 000 10.64 (9.25-12.22) 12.04 (6.03-22.59) 8.83 (3.94-18.60) 41.15 (8.55-83.94)
a

Sample-weighted means use data from Population Assessment of Tobacco and Health Study waves 1 to 3. Age groups are based on age at wave 1. A total of 51 youths and 15 emerging adults lacked wave 2 vaping data. Among those who vaped at wave 2, flavor preference was missing for 14 youths and 2 emerging adults. Sex, race, Hispanic ethnicity, (parental) education, and (parental) income were missing in 0.26%, 4.18%, 2.33%, 0.50%, and 11.78% of youth observations, respectively; for emerging adults, the corresponding percentages were 0.9%, 3.68%, 0.45%, 0.44%, and 12.88%.