It's a voluntary survey. The simplest answer is that the people who are the worst fathers are also the biggest liars.
Probably also a factor of if you are on welfare you might think your answers would affect that - even though the survey surely says it won't affect anything who's going to believe that.
And then read the other two letters below that.
In other words the CDC don't understand how numerators and denominators work, just like with the COVID stats.
It's a voluntary survey. The simplest answer is that the people who are the worst fathers are also the biggest liars.
Probably also a factor of if you are on welfare you might think your answers would affect that - even though the survey surely says it won't affect anything who's going to believe that.
Probably by self reporting. "I take care of my kids," meaning that they see the kid once every few months and buy him a coke.