Biostatistics Practice
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Question 1
Researchers study the relationship between interpersonal violence and health in college age women. The researchers report an OR for psychological distress among abused versus non-abused women (OR 1.37 95% CI 1.03-2.21). Based on this information, you know:
a. Abused women are significantly more likely to have psychological distress.
This is a clinically significant result
In this study women who were abuse were 37 times more likely to report psychological distress.
There is no significant difference in psychological distress for abused and non-abused womenBiostatistics Practice Quiz
Question 1
Researchers study the relationship between interpersonal violence and health in college age women. The researchers report an OR for psychological distress among abused versus non-abused women (OR 1.37 95% CI 1.03-2.21). Based on this information, you know:
a. Abused women are significantly more likely to have psychological distress.
This is a clinically significant result
In this study women who were abuse were 37 times more likely to report psychological distress.
There is no significant difference in psychological distress for abused and non-abused women
Question 2
Researchers study the relationship between interpersonal violence and health in college age women. The researchers report an OR for somatic symptoms among abused versus non-abused women (OR 1.03 95% CI 0.79-1.71). Based on this information, you know:
There is no significant difference in somatic symptoms for abused and non-abused women.
Abused women are significantly more likely to have somatic sypmtoms
This is a clinically significant result
No answer text provided.
Question 3
A study examined the relationship between having a baccalaureate degree and passing a cultural competency exam among a group of 987 randomly selected registered nurses at your hospital. The researchers report that more registered nurses with a baccalaureate degree passed the cultural competency exam (OR 1.54, 95% CI 0.98-1.79). Interpret this information.
More nurses with a baccalaureate degree passed the exam but this was not a significant difference
Nurses with a baccalaureate degree were significantly more likely to pass the exam.
98% of the nurses passed the exam and the 2% that didn’t did not have a baccalaureate degree.
d. This is an example of a type II error.
Question 4
A study examined the relationship between having a baccalaureate degree and passing a cultural competency exam among a group of 87 randomly selected registered nurses at your hospital. They report an OR of 1.73 (95% CI 0.44-2.79) for passing rates among nurses with vs. without a baccalaureate degree. If the results of the study were incorrect it would be an example of:
A type II error
A type I error
Sampling bias
Sampling error
Question 5
A nurse at Lakeside hospital conducts a study that reports a when there is ice on the road the risk of traumatic injuries is higher (RR=5.3, 95% CI= 2.3-8.1). You know this measure means:
Ice on the road is a significant risk factor for traumatic injuries
It is time to buy snow tires
Ice on the road is a clinically significant risk factor for traumatic injuries
Ice on the road appears to be a risk factor but it is not significant
Question 6
An emergency room nurse at Rochester Regional Health conducts a study that reports if an emergency travel advisory is issued during a storm the risk of traumatic injuries is impacted (RR=0.89, 95% CI=0.74-0.98). You know this means:
An emergency travel advisory is a significant protective factor decreasing tr
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