A pharmacist noticed an increase in the sale of anti-diarrhea medications and contacted the local Department of Public Health. An investigation revealed that most of those who developed diarrhea had attended a wedding the previous weekend. After interviewing those who had attended the wedding, the investigators believed that a cream sauce used in the pasta may have been the source of the outbreak. There were 332 people at the wedding. Of the 285 who chose pasta, 197 became ill, while only 8 of those who did not eat pasta became ill. What is the value of the appropriate measure of association