Table 4 Analytical results based on item response theory of the knowledge scale for preconception care (total n = 2000)
Items | % correct | %correct (Men) | %correct (Women) | Slope | S.E. of slope | Threshold | S.E. of threshold | |
|---|---|---|---|---|---|---|---|---|
Total | Total | Total | Total | Total | Total | Total | ||
1 | Which of the following is a mistaken approach to birth control? | 0.586 | 0.521 | 0.650 | 0.397 | 0.040 | −0.858 | 0.091 |
2 | Which of the following is incorrect about birth control pills? | 0.737 | 0.704 | 0.770 | 0.425 | 0.045 | −1.879 | 0.161 |
3 | Which of the following is incorrect about pregnancy? | 0.691 | 0.649 | 0.732 | 0.653 | 0.050 | −1.196 | 0.071 |
4 | What is the minimum amount of folic acid that should be taken to effectively reduce the risk of congenital abnormalities of the brain and spinal cord of the baby? | 0.166 | 0.132 | 0.200 | 0.234 | 0.044 | 3.904 | 0.750 |
5 | Regarding folic acid intake by women planning to become pregnant, which of the following is correct? | 0.691 | 0.605 | 0.776 | 0.129 | 0.039 | −3.993 | 1.134 |
6 | Which of the following is effective in preventing sexually transmitted diseases? | 0.922 | 0.906 | 0.937 | 0.759 | 0.077 | −2.691 | 0.178 |
7 | Regarding smoking during pregnancy, which of the following is correct? | 0.877 | 0.837 | 0.917 | 1.185 | 0.089 | −1.843 | 0.075 |
8 | Regarding how drinking by the mother during pregnancy can affect the baby, which of the following is correct? | 0.897 | 0.879 | 0.915 | 0.691 | 0.071 | −2.556 | 0.177 |
9 | In terms of places to receive consultation if you have been physically abused by your partner, which of the following is correct? | 0.859 | 0.828 | 0.891 | 1.399 | 0.111 | −1.648 | 0.063 |
10 | What should you do if a symptom of a disease that worries you persists? | 0.788 | 0.776 | 0.799 | 0.694 | 0.055 | −1.695 | 0.100 |
11 | Which of the following hormones is unrelated to the menstrual cycles of women? | 0.414 | 0.357 | 0.472 | 0.333 | 0.038 | 0.365 | 0.108 |
12 | Regarding symptoms related to the menstrual cycles of women, which of the following is incorrect? | 0.701 | 0.620 | 0.783 | 1.030 | 0.074 | −1.039 | 0.049 |
13 | Regarding the menstrual cycles of women, which of the following is incorrect? | 0.722 | 0.636 | 0.808 | 1.078 | 0.077 | −1.108 | 0.050 |
Mean | 0.696 | 0.650 | 0.742 | 0.693 | – | −1.249 | – | |