Table 1.
Demographic characteristics, health literacy, vaping experience, and study completion time by condition.
| Characteristics (demographics) | Total (N=435) | Video consent group (n=215) | Written consent group (n=220) | Chi-square or 2-tailed t test (df) | P value | ||||||||
| Age, mean (SD) | 18.67 (2.69) | 18.54 (2.65) | 18.79 (2.73) | 0.97 (433)a | .37 | ||||||||
| Gender, n (%) | 7.16 (6)b | .52 | |||||||||||
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Men | 213 (49) | 104 (48.4) | 109 (49.5) |
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Women | 178 (40.9) | 84 (39.1) | 94 (42.7) |
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Nonbinary | 18 (4.1) | 12 (5.6) | 6 (2.7) |
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Trans woman | 3 (0.7) | 2 (0.9) | 1 (0.5) |
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Trans man | 10 (2.3) | 5 (2.3) | 5 (2.3) |
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Gender fluid or queer | 5 (1.1) | 3 (1.4) | 2 (0.9) |
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Other | 8 (1.8) | 5 (2.3) | 3 (1.4) |
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| Race or ethnicity, n (%) | 15.31(5)b | .36 | |||||||||||
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Non-Hispanic White | 180 (41.4) | 99 (46.0) | 81 (36.8) |
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Non-Hispanic Black | 105 (24.1) | 49 (22.8) | 56 (25.4) |
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Non-Hispanic Asian | 59 (13.6) | 25 (11.6) | 34 (15.5) |
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Hispanic | 62 (14.3) | 32 (14.9) | 30 (13.6) |
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Other or multiracial | 23 (5.3) | 7 (3.3) | 16 (7.3) |
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Prefer not to answer | 6 (1.4) | 4 (1.9) | 2 (0.9) |
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| Education, n (%) | 5.96 (7)b | .82 | |||||||||||
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6th grade | 1 (0.2) | 0 | 1 (0.5) |
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9th grade | 14 (3.2) | 4 (1.9) | 10 (4.5) |
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10th grade | 35 (8.0) | 18 (8.4) | 17 (7.7) |
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11th grade | 56 (12.9) | 28 (13.0) | 28 (12.7) |
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12th grade | 94 (21.6) | 51 (23.7) | 43 (19.5) |
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Graduated high school or GEDc | 55 (12.6) | 30 (14.0) | 25 (11.4) |
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College | 152 (34.9) | 71 (33.0) | 81 (36.8) |
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Other | 28 (6.4) | 13 (6.0) | 15 (6.8) |
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| Health literacy, n (%) | 0.40 (1)b | .69 | |||||||||||
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Low | 66 (15.2) | 34 (15.8) | 32 (14.5) |
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High | 369 (84.8) | 181 (84.2) | 188 (85.5) |
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| Lifetime nicotine vaping experienced (yes), n (%) | 215 (49.4) | 103 (47.9) | 112 (50.9) | 0.73 (2)b | .69 | ||||||||
| Average completion time (minutes)e , mean (SD) | 4.8 (3.0) | 4.5 (2.49) | 5.1 (3.40) | 2.1(378)a | .04 | ||||||||
a2-tailed t test.
bChi-square test.
cGED: General Education Development.
dLifetime nicotine vaping experience was calculated based on the 309 participants who answered this optional question.
eAverage study completion time was calculated from 380 participants, eliminating 55 extreme outliers—24 in the written group and 31 in the video group.