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Test Yourself

The following table summarises the results of a clinical trial to assess the effect of a new treatment (A) against the standard treatment (B). The outcome we are interested in was whether the patient had died 6 months after receiving the treatment.

 

Died

 

 

Yes

No

Total

Treatment A

41

216

257

Treatment B

64

180

244

Total

105

396

501

Multi-choice

Question

(a)    What was the risk of dying amongst those who received treatment A?

Answers

41/216

41/257

41/105

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Question

(b)   What was the risk of dying amongst those who received treatment B?

Answers

64/244

64/105

64/180

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Reflection

What additional data would you like to have to understand this pattern of road accident casualties by age in a district of London as summarised in the table below?

Age

Frequency

0-4

28

5-9

46

10-15

58

16

20

17

31

18-19

64

20-24

149

25-59

316

60-80

103

Total

815

DropDown Activity

Complete the following sentences:

A random sample of pregnant women free of depression are studied over a period of 2 years to estimate the of maternal depression.

A random sample of mums with children under 1year of age are given a questionnaire asking them about symptoms of depression, the aim is to estimate the of depression among mothers.

 

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True or False

Question 1

When comparing the prevalence of disease between groups or populations, a higher prevalence will always indicate a less healthy population.