Epidemiological Studies: Methods and Benefits (HSC SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which type of study is usually the first investigation carried out when examining disease causes?
Which type of study is usually the first investigation carried out when examining disease causes?
Descriptive studies
What distinguishes observational studies from intervention studies?
What distinguishes observational studies from intervention studies?
Researchers observe without interfering
What does 'incidence' measure in analytical studies?
What does 'incidence' measure in analytical studies?
New cases in a specific time period
In a case-control study, what are 'controls'?
In a case-control study, what are 'controls'?
People who do not have the disease
What is a key characteristic of cohort studies?
What is a key characteristic of cohort studies?
Participants are disease-free at start
Why are placebos used in experimental intervention studies?
Why are placebos used in experimental intervention studies?
To determine if improvements are real
What are the two critical requirements for valid epidemiological studies?
What are the two critical requirements for valid epidemiological studies?
Large sample sizes and long periods
How do random errors differ from systematic errors in studies?
How do random errors differ from systematic errors in studies?
Random errors are inconsistent
What is recall bias?
What is recall bias?
Diseased people remember factors better
What is a confounding factor in epidemiological studies?
What is a confounding factor in epidemiological studies?
An unrecognised factor affecting results