Table 2.
Item Analysis
| Question | “How easy or difficult is it for you to…” | Don't know (%) | Nonreponse (%) | Missing total (%) | Mean | Difficulty (%) | SD | Variance | Excluded in step | ITC |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | find out how to recover quickly when you have a cold? | 5.5 | 0.9 | 6.4 | 2.95 | 65.06 | .791 | .626 | .383 | |
| 2 | find information about a cold, sore throat, or coughing? | 8.9 | 0.9 | 9.8a | 2.91 | 63.57 | .806 | .650 | 1 | .445 |
| 3 | find out what you can do so that you don't get too fat or too thin? | 6.3 | 1.1 | 7.4 | 3.39 | 79.80 | .810 | .656 | .377 | |
| 4 | find out what you can do to avoid getting a cold in the winter? | 2.2 | 1.4 | 3.6 | 3.42 | 80.56 | .707 | .500 | .419 | |
| 5 | find out how you can best relax? | 4.1 | 1.5 | 5.6 | 3.39 | 79.75 | .748 | .559 | .242 | |
| 6 | find out which food is healthy for you? | 3.1 | 1.4 | 4.5 | 3.42 | 80.56 | .707 | .500 | .419 | |
| 7 | understand when and how you should take your medicine when you are ill? | 5.2 | 0.8 | 6.0 | 3.10 | 69.95 | .849 | .729 | .447 | |
| 8 | understand what your doctor says to you? | 2.4 | 1.2 | 3.6 | 3.28 | 75.93 | .730 | .533 | .430 | |
| 9 | understand why you sometimes need to see the doctor even though you are not ill? | 4.1 | 1.3 | 5.4 | 3.54 | 84.62 | .738 | .545 | .397 | |
| 10 | understand why you need vaccinations? | 3.3 | 1.0 | 4.3 | 3.46 | 82.03 | .787 | .620 | .386 | |
| 11 | understand what your parents tell you about your health? | 3.6 | 1.4 | 5.0 | 3.24 | 74.83 | .678 | .459 | .474 | |
| 12 | understand why you need to relax sometimes? | 3.7 | 1.2 | 4.9 | 3.43 | 81.15 | .749 | .562 | .509 | |
| 13 | judge what helps or does not help to get rid of a cold? | 10.0 | 1.4 | 11.4a | 2.91 | 63.60 | .761 | .579 | 1 | .588 |
| 14 | judge the truth of what the doctor tells you in order for you to get well again? | 7.1 | 1.7 | 8.8a | 3.32 | 77.47 | .727 | .529 | 1 | .431 |
| 15 | judge whether you can trust the media when they warn you about risks to your health? | 16.6 | 1.6 | 18.2a | 2.82 | 60.60 | .832 | .692 | 1 | .388 |
| 16 | judge whether what may happen to you later if you start smoking is true? | 9.6 | 1.8 | 11.4a | 3.57 | 85.53 | .800 | .639 | 1 | .451 |
| 17 | judge what helps a lot for you to stay healthy and what does not help much? | 5.8 | 1.7 | 7.5 | 3.15 | 71.63 | .723 | .523 | .646 | |
| 18 | judge how where you live (neighborhood, district, street) is connected to your health? | 18.1 | 2.1 | 20.2a | 2.76 | 58.70 | .897 | .805 | 1 | .438 |
| 19 | judge how your behavior (exercise and diet) is connected to your health? | 7.5 | 2.1 | 9.6a | 3.35 | 78.33 | .756 | .572 | 1 | .541 |
| 20 | do what your parents tell you to do so that you can get well again? | 1.9 | 1.2 | 3.1 | 3.43 | 81.11 | .654 | .428 | .385 | |
| 21 | take your medicine in the way you're told to? | 2.9 | 1.3 | 4.2 | 3.40 | 80.02 | .744 | .554 | .477 | |
| 22 | call an ambulance in an emergency? | 6.7 | 1.6 | 8.3a | 3.33 | 77.56 | .859 | .738 | 1 | .470 |
| 23 | stick to what you have learned in road safety lessons? | 6.1 | 1.6 | 7.7 | 3.48 | 82.52 | .633 | .400 | .479 | |
| 24 | decide when you need to wash your hands? | 1.1 | 2.0 | 3.1 | 3.66 | 88.66 | .597 | .357 | 2 | .382 |
| 25 | have a healthy diet? | 2.2 | 2.1 | 4.3 | 5.41 | 80.34 | .701 | .491 | .482 | |
| 26 | take part in deciding whether healthy food is served at school? | 13.3 | 2.4 | 15.7a | 3.21 | 73.73 | .812 | .659 | 1 | .381 |
Note. All items translated from German.
a
More than 8% missing. ITC = item-total correlation.