Question

Information: An Ob/Gyn collected data on the smoking status of the mother during pregnancy, and whether the child was born premature (37 weeks or fewer of gestation). The results were as follows:

		Pre-mature birth status
		Cases	Non-cases	Total
Smoking Status during Pregnancy	Smoked	36	370	406
	Never smoked	168	3396	3564
	Total	204	3766	3970

(1) Calculate and interpret the odds ratio to determine if smoking throughout pregnancy is related to premature birth. (2 pts)

2) Do these data provide sufficient evidence to indicate, at the .05 level of significance, that the there is an association between smoking throughout pregnancy and premature birth? (4 pts)

Note: calculate expected values

Answer 1