.
Worse than some of them and better than others. I mean, consider this question:
Do you often feel badly about your sexual behavior?
The answer "very much" gives you a higher sex addiction score, while "not at all" has a sex addiction value of zero. It's as if whoever designed the quiz thinks that "sex addiction" entails guilt. Then there's this one:
Has your sexual behavior ever interfered with your family life?
If you're single and a sex addict, the only way your sexual behavior would interfere with your family life is if you're bringing crazy ass people around your family or trying to fuck your own relatives.