Data from persons involved in car wrecks (retrospectivecohortstudy)- all people in this data set were involved in car wrecks, but not all were sent to the emergency room

		Emergency Room Visits
		Yes	No
Wearing a Seat Belt	Yes	58,000	448,000
No	18,000	39,000

Calculate the Relative Risk for requiring an emergency room visit for people involved in car wrecks who were wearing seatbelts versus those not wearing seatbelts and interpret your result for this cohort study