Two of the individuals in the sample group with no evidence of periodontal disease smoked.What was the number in the sample who did not smoke and did not have periodontal disease?
A) 20
B) 25
C) 38
D) 50
Correct Answer:
Verified
Q2: Tobacco use is associated with increased levels
Q3: No gender differences were identified in the
Q4: The rate of occurrence of new disease
Q5: The level of disease in a population
Q6: What is the best way to identify
Q7: Use the following epidemiologic study to answer
Q8: Ten of the subjects in the study
Q9: The 1987 national data on the oral
Q10: Which plaque scoring system evaluates the amount
Q11: The number of cases of disease present
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