Table 2.
General Characteristics of E-cigarette Related YouTube Videos Uploaded After the Mandate Effective Date by FDA-Mandated Warning Statement Status (N = 61)
| General characteristic | Total (N = 61) |
Included FDA-Mandated Warning Statement n = 8 (13.1%) |
Included Non-mandated Warning Statement n = 18 (29.5%) |
No Warning Statement n = 35 (57.4%) |
|---|---|---|---|---|
| Number of views1 | ||||
| Total number | 102,918,585 | 2,818,757 | 14,024,924 | 86,074,904 |
| Median | 483,467.0 | 65,065.0a | 201,260.0a | 1,067,784.0b |
| Interquartile range | 1,786,139.0 | 734,956.5 | 541,538.0 | 2,733,999.0 |
| Range | 4,705–12,941,092 | 15,639–1,086,091 | 4,705–4,858,834 | 19,305–12,941,092 |
| Number of likes1 | ||||
| Total number | 1,797,349 | 66,528 | 217,754 | 271,879 |
| Median | 8,200.0 | 1,402.0a | 3,600.0a | 17,000.0b |
| Interquartile range | 28,264.0 | 7,365.0 | 6,464.0 | 39,400.0 |
| Range | 26–272,000 | 259–45,395 | 26–83,000 | 121–272,000 |
| Number of dislikes1 | ||||
| Total number | 106,086 | 2,829 | 25,218 | 78,039 |
| Median | 501.0 | 53.5a | 163.0a | 640.0b |
| Interquartile range | 2,932.0 | 540.5 | 1,662.0 | 3,566.0 |
| Range | 8–9700 | 14–1,533 | 8–9,700 | 28–8,900 |
| Number of Comments13 | ||||
| Total number | 162,654 | 15,728 | 26,053 | 120,873 |
| Median | 1,100.0 | 254.0a | 526.0a | 1,665.5b |
| Interquartile range | 4,751.0 | 1,153.0 | 983.0 | 4999.0 |
| Range | 4–15,911 | 61–12,223 | 4–9,654 | 30–15,911 |
| Duration in minutes and seconds2 | ||||
| Total number | 10 h 24 min 57 sec | 1 h 30 min 26 sec | 3 h 33 min 48 sec | 5 h 20 min 43 sec |
| Median | 10:09 | 11:16a | 10:25ab | 9:32b |
| Interquartile range | 6:17 | 2:25 | 2:24 | 11:37 |
| Range | 0:18–51:29 | 5:55–15:13 | 1:53–51:29 | 0:18–19:54 |
| % (n) | % (n) | % (n) | % (n) | |
| Warning statement representation3 | ||||
| Visual only | 27.9 (17) | 100.0 (9) | 50.0 (9) | — |
| Verbal only | 11.5 (7) | 0 | 38.9 (7) | — |
| Visual and verbal | 3.3 (2) | 0 | 11.1 (2) | — |
| No warning statement | 57.4 (35) | — | — | 100 (35) |
| Sponsored video3 | ||||
| Yes | 54.1 (33) | 62.5 (5)a | 66.7 (12)a | 45.7 (16)a |
| No | 45.9 (28) | 37.5 (3) | 33.3 6) | 54.3 (19) |
| Sponsor type2 | ||||
| E-cigarette industry | 36.1 (22) | 50.0 (4)a | 33.3 (6)a | 34.3 (12)a |
| Non-industry | 18.0 (11) | 12.5 (1) | 33.3 (6) | 11.4 (4) |
| No sponsor | 45.9 (28) | 37.50 (3) | 33.3 (6) | 54.3 (19) |
h, hour, min, minute, sec, second. Warning statements categories include FDA-mandated warning statements and author-defined, non-mandated warning statements. Two videos with FDA-mandated warning statements also displayed 1 non-mandated warning statement. Values with different superscripts in each FDA-mandated warning statement category indicate statistically significant differences for that variable. Column percents are reported. Comparisons of videos with FDA-mandated, non-mandated, and no warning statements were based on the following statistical tests1: Mann-Whitney U,2 χ 2 or Fisher’s exact.3The number of comments for 2 videos were missing and the sample sizes are as follows: n = 17 for videos with non-mandated warnings and n = 34 for videos without any warning statements. H, hours, min, minute, sec, seconds.