Problem
In a case control study examining the relationship between developmental disorders and prenatal exposure to cocaine, the hospital records of 2000 infants diagnosed with a developmental disorder and 2000 control infants were inspected for proven maternal cocaine abuse.
|
Prenatal cocaine use
|
Developmental disorder
|
Totals
|
|
Present
|
Absent
|
|
Present
|
1600
|
600
|
2200
|
|
Absent
|
400
|
1400
|
1800
|
|
Totals
|
2000
|
2000
|
4000
|
What is the value of the exposure odds ratio (EOR)?