Table 2.
Distributions of website activity variables.a
| Index of website activity | Intervention participants (n=92) | Control participants (n=55) | ||
| Task completion, n (%) |
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All months |
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0 | 8 (8.7) |
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1-19 | 15 (16.3) |
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|
20-39 | 15 (16.3) |
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|
40-59 | 30 (32.6) |
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|
60 | 24 (26.1) |
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Month 1 |
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|
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|
0 | 13 (14.1) |
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|
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|
1-4 | 4 (4.3) |
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|
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|
5-9 | 10 (10.9) |
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|
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|
10-14 | 4 (4.3) |
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|
15 | 61 (66.3) |
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|
Month 2 |
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|
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|
0 | 16 (17.8) |
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|
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|
1-4 | 7 (7.8) |
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|
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|
5-9 | 10 (11.1) |
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|
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|
10-14 | 7 (7.8) |
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|
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|
15 | 50 (55.6) |
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Month 3 |
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0 | 21 (23.6) |
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1-4 | 9 (10.1) |
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5-9 | 6 (6.7) |
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|
10-14 | 8 (9.0) |
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|
15 | 45 (50.6) |
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Month 4 |
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0 | 27 (30.7) |
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1-4 | 8 (9.1) |
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5-9 | 9 (10.2) |
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10-14 | 5 (5.7) |
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15 | 39 (44.3) |
|
| Website interaction, mean (SD) |
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|
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Number of website visitsb | 20.0 (12.2) | 10.1 (3.2) | |
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Cumulative hours spent on websiteb | 6.2 (3.6) | 1.7 (0.6) | |
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|
Number of comments made on websitec | 24.8 (15.3) |
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Videos with initiated play (of 20) | 12.4 (7.0) |
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|
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Videos with completed play (of 20) | 10.3 (6.5) |
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|
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Assigned articles visited (of 4) | 2.7 (1.5) |
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Assigned discussion topics visited (of 12) | 8.2 (4.3) |
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|
| Monthly surveys, n (%) |
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Month 1 | 75 (83.3) | 53 (96.4) | |
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|
Month 2 | 72 (80.9) | 50 (90.9) | |
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Month 3 | 66 (75.0) | 53 (96.4) | |
|
|
Month 4 | 57 (65.5) | 51 (94.4) | |
aAn enrolled adolescent had to complete a baseline survey to become a participant. Across the tasks shown within all months or a given month, numbers tally to the total number of participants assigned to the intervention condition (minus any withdrawn participants for months 2-4) and percentages tally to 100%.
b A session “timed out” if participants did not navigate to or refresh a webpage within 15 minutes, necessitating a new visit if the participant still wanted to use the website. If participants did not log out, the timestamp for the last visited webpage was used to calculate the amount of time spent on the website during a given visit. Three outliers were not included when calculating the mean and standard deviation for cumulative hours spent on the website: 1 control group participant whose time amounted to 26.9 hours and 2 intervention group participants whose time amounted to 29.4 and 74.7 hours, respectively.
c A total 36 comments were requested as part of assigned tasks.