Table 3.
Number of correct answers for the vaccination-related knowledge items with repeated measures
| Measure | Knowledge Items (schools 1 and 3) Generalized estimated equations for each item (imputed knowledge items, covariates: age, gender, SES) | |||
|---|---|---|---|---|
| Condition | Pre-educational unit | Post-educational unit | ||
| % correct responses (CI) |
N students, classes, schools |
% correct responses (CI) |
N students, classes, schools |
|
| ITEM 1 Childhood disease | 22 (16-28) | 287, 14, 2 | 44 (38-50) | 291, 14, 2 |
| ITEM 2 Herd immunity | 39 (32-46) | 287, 14, 2 | 55 (44-66) | 291, 14, 2 |
| ITEM 3 Immunization | 70 (65-76) | 287, 14, 2 | 80 (76-84) | 291, 14, 2 |
| ITEM 4 Measles outbreak | 61 (54-69) | 287, 14, 2 | 86 (81-90) | 291, 14, 2 |
| ITEM 5 Bacteria a | 34 (30-39) | 258, 14, 2 | 32 (23-40) | 283, 14, 2 |
| ITEM 6 Infertility | 35 (24-46) | 127, 6, 1 | 82 (78-86) | 130, 6, 1 |
| ITEM 7 Pregnancy malformation | 37 (27-46) | 127, 6, 1 | 68 (61-75) | 130, 6, 1 |
a Item 5 – Bacteria was excluded in the process of item selection; accordingly, it was not imputed, as only items used for the computation of the knowledge scale were imputed. Thus, item 5 is reported with missing responses (6.4%), and listwise deletion is applied