Table 3.
Participant responses to monthly survey items designed to evaluate website development goals and internal consistency (alpha) of composite measures.a
| Construct | Month 1 | Month 2 | Month 3 | Month 4 | ||||||
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α | Mean (SD) | α | Mean (SD) | α | Mean (SD) | α | Mean (SD) | ||
| Dose received (exposure) |
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Perceived engagement (scale 0-2)b | .55 | 1.18 (0.30) | .67 | 1.17 (0.36) | .74 | 1.03 (0.39) | .57 | 1.14 (0.31) | |
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Encouragement of condom use | .93 | 4.52 (0.83) | .88 | 4.63 (0.56) | .85 | 4.59 (0.58) | .92 | 4.39 (0.85) | |
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Condom use normativec | — | — | .75 | 3.51 (0.57) | — | — | .83 | 3.61 (0.74) | |
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Responsiveness to barriers |
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Teens on website | .77 | 2.56 (1.09) | .80 | 2.67 (1.15) | .75 | 2.62 (1.09) | .79 | 2.79 (1.12) |
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Health educators | .80 | 3.16 (1.20) | .82 | 3.35 (1.10) | .71 | 3.30 (1.07) | .76 | 3.46 (1.05) |
| Dose received (satisfaction) |
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Comfort on websited | .65 | 4.21 (0.86) | .66 | 4.24 (0.81) | .67 | 4.08 (0.89) | .61 | 4.01 (0.94) | |
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Perceived privacy | n/a | 4.81 (0.51) | — | — | n/a | 4.83 (0.63) | — | — | |
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Accessibility/ease of use (scale 0-2)b | .59 | 1.75 (0.28) | — | — | .70 | 1.77 (0.30) | — | — | |
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Personal relevance of content | .71 | 3.37 (0.72) | .73 | 3.35 (0.72) | .82 | 3.37 (0.89) | .77 | 3.42 (0.77) | |
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Credibility of teens on websitec | — | — | n/a | 3.50 (0.80) | — | — | n/a | 3.49 (0.81) | |
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Credibility of people in videosc | — | — | n/a | 4.24 (0.81) | — | — | n/a | 4.15 (0.85) | |
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Credibility of health educatorsc | — | — | .85 | 4.52 (0.67) | — | — | .77 | 4.53 (0.64) | |
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Respect for autonomy by health educatorsc |
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How much were health educators... |
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Leaving out information to get you to do what they want? | — | — | n/a | 1.64 (1.26) | — | — | n/a | 1.70 (1.19) |
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Trying to get you to do what they want? | — | — | n/a | 2.93 (1.12) | — | — | n/a | 2.85 (1.24) |
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Trying to help you do what you want? | — | — | n/a | 3.76 (0.94) | — | — | n/a | 3.79 (0.87) |
a Responses are presented by end-of-month survey, collapsing across cohort. Dashes indicate that a construct was not assessed as part of a particular survey. When a single item was used to assess a construct, n/a (for not applicable) is indicated in lieu of the internal consistency (alpha).
b Perceived engagement and accessibility/ease of use were assessed using a 3-point Likert scale (0-2). Other constructs were assessed using a 5-point Likert scale (1-5).
c Participants were asked to think across the past 2 months.
d The correlation between these 2 items is presented instead of the internal consistency (alpha).