Suppose 45 traffic accidents occur on a given road and you a

Suppose 45 traffic accidents occur on a given road and you are interested in measuring whether the accidents are associated with rain showers. The \"case\" period is designated as the 24 hour preceding the accident and the \"control\" period is designated as 1 week prior to the case period. Among the accident cases, 7 experienced rain showers during the case and control periods; 16 experienced rain during the case period but not during the control period; and 18 experienced no rains during either the case or control periods. Use an appropriate measure and describe whether an association exists between particulate matter and cardiac events.

Solution