Greensleeves, if I understand correctly, the twins on your father's side would affect your odds. What would not affect your odds are twins on your husband's side (though some speculate that identical twins could be affected by this).
1. I have no family history.
2. I'm above average weight. What's average height? I'm 5'7" (seems average to me)
3. I was 34 when they were conceived (which some consider "older", but the article doesn't sound as if it considers that older)
4. I guess we'll see if I have more twins eventually! This is the one reason I'm not sure if we want more--a fifth child doesn't seem out of the question, but two more seems too many for me
5. No yams, lots of dairy
6. No fertility assistance
7. Only two other children, but I think if this were rephrased, it could be a factor. I've heard that a number of pregnancies increases your odds. I had two miscarriages, so four pregnancies before the twins. For some reason, I've gotten the impression that miscarriages can often closely precede twin conception. Why? I dunno.
8. Not conceived while breastfeeding.
9. Not on the pill
10. For sure