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Question The following data set provides a pediatric research study using healthy controls for the vitamin D status of children with inflammatory bowel disease (IBM). Subject ID number Group Gender ALB ALBDate ALT ALTDate AST 20 0 Female 4 5/29/2012 12 5/29/2012 14 21 0 Female 3.9 7/20/2011 13 7/20/2011 18 22 0 Male 4 12/7/2010 19 12/7/2010 27 23 0 Female 3.7 11/1/2012 18 11/1/2012 33 24 0 Female 5.1 6/21/2011 8 6/21/2011 17 25 O Female 4.6 9/18/2012 14 9/18/2012 16 26 0 Male 4.3 9/27/2010 21 9/27/2010 20 27 0 Male 4.1 10/16/2012 22 10/16/2012 28 n 7/19 /9017 17 7/19/9017 10 Help Copy to Clipboard Download CSV Labels of BMI status were added, such as under 18.5 = underweight, 18.5 to 24.9 = healthy, 25 to 29.9 = overweight, 30 or higher = obese. What type of variable would these labels represent? Select the correct answer below: O Explanatory Response O Lurking Observation