Table 1.
The number of experts with a content valid rating and the calculation of CVI for each item.
| Item | Round 1 | Round 2 | Round 3 | |||
|---|---|---|---|---|---|---|
| Number of experts | CVI | Number of experts | CVI | Number of experts | CVI | |
| 1. Toxic chemicals in our day-to-day lives, like air pollution or lead in drinking water, can increase a child's risk of developing ADHD or autism | 6 | 1.00 | 6 | 1.00 | 4 | 1.00 |
| 2. The amount of resources that my government invests to prevent learning and behavioral conditions in children is about equal to the amount it invests to treat these conditions | 6 | 1.00 | 5 | 0.83 | 3* | 0.75 |
| 3. My government should devote more resources to make sure that consumer products do not contain toxic chemicals that are unsafe for children. | 5 | 0.83 | 6 | 1.00 | 4* | 1.00 |
| 4. Of all the things my government does to keep children healthy, reducing children's exposure to toxic chemicals should be a priority. | 5 | 0.83 | 5 | 0.83 | N/A | N/A |
| 5. There are things parents can do during pregnancy and early childhood to reduce their child's risk of developing a learning or behavioral condition, like ADHD or autism. | 6 | 1.00 | 5 | 0.83 | N/A | N/A |
| 6. The levels of toxic chemicals commonly found in food, consumer products, and drinking water are too low to interfere with children's brain development. | 6 | 1.00 | 5 | 0.83 | 3* | 0.75 |
| 7. Most governments spend 95% or more of their budgets to treat disease and disabilities. Governments should devote more of their budget to prevent these conditions | 5 | 0.83 | 6 | 1.00 | 4* | 1.00 |
| 8. I trust scientists' recommendations about how to reduce exposure to toxic chemicals | 4 | 0.67 | 4 | 0.67 | 4* | 1.00 |
| 9. Children are more likely to be harmed by toxic chemicals than adults, especially before they are born. | 6 | 1.00 | 6 | 1.00 | 4* | 1.00 |
| 10. I trust companies to make products that don't contain harmful chemicals. | 6 | 1.00 | 6 | 1.00 | 4* | 1.00 |
| 11. If I knew how to reduce children's exposure to toxic chemicals, I would do it. | 6 | 1.00 | 4 | 0.67 | 4* | 1.00 |
| 12. The number of children who would benefit from regulating toxic chemicals linked to learning and behavioral conditions is greater than the number of children who benefit from treating these conditions. | 6 | 1.00 | 5 | 0.83 | 3* | 0.75 |
| 13. I want to learn more about how to reduce children's exposure to toxic chemicals. | 6 | 1.00 | 6 | 1.00 | 4 | 1.00 |
| 14. Toxic chemicals are found in everyday products, including foods, cleaning products, and personal care products. | 6 | 1.00 | 6 | 1.00 | N/A | N/A |
| 15. All parents have equal opportunities to protect their children from toxic chemicals, regardless of income level, race or where they live | 6 | 1.00 | 5 | 0.83 | 3* | 0.75 |
| 16. My government has regulations to make sure that personal care products, furnishings, and food do not contain harmful levels of toxic chemicals. | 6 | 1.00 | 6 | 1.00 | 3* | 0.75 |
| 17. If toxic chemicals were a threat to my family's health, my pediatrician, obstetrician, or general practitioner would have told me about it. | 6 | 1.00 | 6 | 1.00 | 4* | 1.00 |
| 18. Research shows that most pregnant women have toxic chemicals in their blood | 5 | 0.83 | 6 | 1.00 | 4* | 1.00 |
| 19. Toxic chemicals that pregnant women are exposed to can increase the risk of their child having a learning or behavioral condition after they are born. | N/A | N/A | 5 | 0.83 | 4* | 1.00 |
| 20. I try to purchase products that do not contain toxic chemicals that may be harmful to my family | N/A | N/A | N/A | N/A | 4 | 1.00 |
*
Indicates that the wording of the item was changed in subsequent rounds to reflect changes posed by expert and focus group participants. See Supplementary Table 2 for more information on this.