In a Study by Shaw and Colleagues, the Higher the Level

Multiple Choice

In a study by Shaw and colleagues, the higher the level of maternal obesity, the higher the rate of neural tube defects. Folic acid supplements

A) were effective in reducing neural tube defects for all women.
B) were not effective in women weighing more than 154 pounds.
C) were effective only in the most obese women.
D) increased the rate of neural tube defects.