You are interested in the association between post-term pregnancy (pregnancy lasting >42 weeks) and macrosomia (infant birth weight of >4500grams (9lbs 15oz)), which is associated with delivery complications and some poor infant outcomes. You are concerned that the effect might differ by pre-pregnancy BMI, as those who are heavier tend to have larger babies. Using medical records, you obtain the following data on deliveries in the past year:

Post-term pregnancy BMI >30 Macrosomia No macrosomia
Yes Yes 9 110
No Yes 17 277
Yes No 11 132
No No 11 320
1.)What is the relative risk of macrosomia associated with post-term pregnancy among those with BMI >30?

2.)What is the relative risk of macrosomia associated with post-term pregnancy among those with BMI ≤30?