Question

Serum lead levels below 10mcg/dl in childhood are associated with lower 10, whereas level above 10mcg/dL are related to hyperactivity, aggression, poor growth, diminished academic performance, increased delinquency, seizures and even death. The neurological damage that occurs cannot be reversed, even once exposure is stopped. 3.1 You have been asked to follow up in your community and determine what outcomes are associated with lead exposure in children. List three dependent variables for your study. 3.2 What level of measurement are your dependent variables? Are they continuous or categorical? 3.3 If you are looking at what outcomes are associated with lead exposure in children, what is your indpendent variable?

Answer 1

3.1 Three dependent variables to follow up on what outcomes are associated with lead exposure are

a. If children had a documented blood lead screening

b. Blood lead level of children

c. Height and weight of children

3.2 Level of measurement of dependent variables and if they are continuous or categorical

a. If children had a documented blood lead screening: it is a nominal level of measurement where the subject will be placed into any one of two or more categories. This is an categorical dependent variable.

b. Blood lead level of children: it is a metric level of measurement where subject score is a number with integer or a fraction which are continuous interval or ratio data.

c. Height and weight of children: it is also an metric level of measurement where subject score is a number with integer or a fraction which are continuous interval or ration data.

3.3 Independent variable to see what outcomes are associated with lead exposure is

- Primary care provider type where child was first enrolled