Table 1.
Overview of number and examples of questions, answering categories, mean scores, and Cronbach 𝛼.
| Variable | Number of questions | Example of questions/items, answer options | Mean (SD) | Mediana (IQR) | Cronbach alpha |
| Recallb | 6 | “Some groups of individuals are at risk of developing vitamin B6 deficiency. Which groups are these?” “Someone is using high-dose vitamin B6 dietary supplements (100 milligram) for a long period of time. What kind of influence can this have on the health condition of this person?” Multiple choice or multiple response answer options |
4.30 (2.71) | —c | .77 |
| Cognitive involvementd | 12 | “During your website visit, certain thoughts about vitamin B6 may have come to your mind. Please write down your thoughts about vitamin B6 in the text boxes below.” Open-ended questions |
— | 3 (3) | — |
| Perceived active control | 3 | “While I was on the website, I could choose freely what I wanted to see.” Totally disagree (1) to totally agree (7) |
3.98 (1.29) | — | .80 |
| Cognitive load | 4 | “I had to think hard in order to understand the information on the website” Totally disagree (1) to totally agree (7) |
4.05 (1.42) | — | .92 |
| Health literacye | 6 | “If you are allowed 60 grams of carbohydrates as a snack, how much ice cream could you have?” Open-ended questions |
— | 6 (1) | — |
| Need for cognition | 7 | “I really enjoy a task that involves coming up with new solutions to problems” Totally disagree (1) to totally agree (7) |
4.94 (1.02) | — | .83 |
aFor variables with non-normal distribution, the median and IQR are presented.
bRecall scores could range from 0 (no correct answers) to 9 (all answers are correct).
cNot applicable.
dCognitive involvement scores could range from 0 (no thoughts) to 12 (12 thoughts).
eHealth literacy scores could range from 0 (no correct answers) to 6 (all answers are correct).