Statistics Applied Clinical RE
Questionaries answers
01/26/2021
1. If a research is examining how exposure to cigarette ads affects smoking behavior, cigarette ads are what type of variable?
a. Quantitative
b. Qualitative
c. Dependent
d.Independent
2. If a researcher is examining how exposure to cigarettes ads affects smoking behavior, smoking behavior is what type of variable
a. Ratio
b. Independent
c.Dependent
d. Nominal
3. You are asked to design a study measuring how nutritional status is related to serum lead levels in children. You assess calcium and fat intake, as well as serum lead levels in a sample of 30 children who are 2 years old. Lead levels are measured in micrograms per deciliter (mcg/dL). One child had a lead level of 17 mcg/dL. This is an example of what type of variable?
a.Quantitative
b. Qualitative
c. Dependent
d. Nominal
4.You are asked to design a study to examine the relationship between preoperative blood pressure and postoperative hematocrit
4.1 What is your dependent variable?
The dependent variable is the postoperative hematocrit
5. You are later asked to do a follow-up study to see whether requiring an intraoperative blood transfusion impacted postoperative rates of poor mental health, specifically depression.
5.1 What is your independent variable?
Intraoperative blood transfusion
5.2How you will measure them and Why?
The Intraoperative blood transfusion will be measure in ratio mm/minute because is a quantitative variable. The Poor mental health, specifically depression will be measure in an ordinal measurement level
6. You decide to measure depression on the following scale: 1= low, 2 =moderate, 3= high.
6.1 What level of measurements is this?
The level of measurement is Ordinal
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