# The Know-It-Alls Quiz

## Quiz by NUR INTAN SARAHANA HAMDAN

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20 questions
• Q1

What are three types of frequency measures used ?

Ratio

All of above

Rates

Proportions

30s
• Q2

All proportions are ratios, but not all ratios are proportions.

true
false
True or False
30s
• Q3

What is the following fraction ?

Ratio

Incidence proportions

Proportions

Mortality rate

30s
• Q4

Table shows exposure and disease in a Hypothetical Population of 10,000 persons.

Calculate the risk ratio.

5.0

1.0

4.0

3.0

45s
• Q5

Table shows exposure and disease in a Hypothetical Population of 10,000 persons.

Calculate the odds ratio.

4.2

9.0

3.6

5.2

45s
• Q6

What is the following fraction?

Age-specific mortality rate

Gender-specific mortality rate

Cause-specific mortality rate

30s
• Q7

This statistic is used to estimate the risk of acquiring a disease. It may be measured as a rate or a proportion.

Users re-arrange answers into correct order
Jumble
30s
• Q8

In a cohort study, the risk ratio of developing diabetes was 0.86 when comparing consumers of tea (exposed) to those who did not drink tea (non-exposed). Which one statement is correct ?

The tea drinkers have lower risk of developing diabetes

The tea drinkers have higher risk of developing diabetes

Based on the information given, we cannot tell if the observed difference in disease risk is the result of chance.

Risk ratio is close to the value one, so there is no difference in disease risk between the two groups.

30s
• Q9

In which one of the following circumstances will the prevalance of a disease in the population increase, all else being constant ?

If the incidence rate of disease falls

If the population in which the disease is measured increases

If survival time with the disease increases

If recovery of the disease is faster

30s
• Q10

In an epidemiological context, what is the population at risk ?

The population group with the highest relative risk of disease

The proportion of a population that engage in risky behaviours

The group of people that may experience the outcome we want to study

A group of people participating in a study that may be

30s
• Q11

What is the relative risk of developing gastritis from herring consumption ?

2.0

0.5

2.3

8.0

45s
• Q12

An outbreak of gastritis occurred on a cruise ship. The data in the following table were obtained shortly after the outbreak, from a questionnaire completed by everyone on board the ship.

People who ate Herring

Sick : 200     Well : 800

People who did not eat Herring

Sick : 100       Well : 900

What is the relative risk of developing gastritis from herring consumption ?

2.3

2.0

8.0

0.5

45s
• Q13

In a study of 500 cases of a disease and 500 controls, the suspected etiological factor is found in 400 cases and 100 controls. What is absolute risk of disease in people with the factor?

80%

40%

20%

cannot be computed from the data given

45s
• Q14

Regionville is a community of 100,000 persons. During 1985, there were 1,000 deaths from all causes. All cases of tuberculosis have been found and they total 200 males and 100 females. During 1985, there were 60 deaths from tuberculosis, 50 of them are males.. What is the crude mortality rate for Regionville ?

10 per 1,000

300 per 100,000

100 per 1,000

200 per 1,000

45s
• Q15

Prevalance includes all new cases, both new and preexisting in the population at the specified time, whereas incidence is limited to new cases only.

true
false
True or False
45s

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