Examine whether there is significant difference in health literacy at baseline between participants in campus A compared to participants in campus B.

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Assessment question for Applied Statistics and Data Analysis for Public Health (MMB725024)

The healthy lifestyle dataset provided is obtained from a hypothetical randomised control trial which was conducted to evaluate a lifestyle health education intervention. The intervention was delivered over 12 weeks and the main aim was to promote healthy lifestyle behaviours among university students. Some specific objectives of the study were to increase health literacy and improve healthy weight among study participants.

Measurements for weight, health literacy and other relevant study variables were taken at baseline and at the end of 12 weeks. Details of variables in the dataset are presented in table 1 below.

Using the dataset and background information provided, conduct statistical analysis to address the following and present your findings in a 3000-word statistical analysis report.

  1. Examine whether there is significant difference in health literacy at baseline between participants in campus A compared to participants in campus B.
  2. Evaluate the effect of the intervention on body mass index in the intervention group compared to the control group.
  3. Examine whether there is statistically significant difference in the proportion of asthma cases between the intervention and control groups.
  4. Determine whether there is statistically significant difference in health literacy at baseline between participants in age groups ≤20 years, 21-25 years and ≥26 years.
  5. Investigate and explain how health literacy at baseline, age and sex can be used to predict post-intervention body mass index among participants in the study

Table 1. Description and coding of variables in the healthy lifestyle dataset

Variable name

Description

Coding information

Age

age of participants

 

asthmadiag

participant’s asthma status i.e. whether participant has asthma or has no asthma

0: No asthma

1: asthma

diabdiag

participant’s diabetes status i.e. whether participant has diabetes or has no diabetes

0: No diabetes

1: diabetes

HealthLiteracy1

percentage health literacy score at baseline

 

HealthLiteracy2

percentage health literacy score at the end of the study

 

height

height of participants

 

intervention

Intervention status i.e. whether participants were allocated to the active intervention or control group

1: control group

2: intervention group

location:

location of participants (two campuses: campus A and campus B)

1: campus A

2: campus B

sex

male or female

1: male

2: female

smoke

Participant’s smoking status

0: Not smoking

1: Smoking

weight1

weight of participants before intervention

 

weight2

weight of participants after intervention

 

Note: you are required to study the nature and properties of the given data and invoke relevant assumptions to inform your choice of statistical techniques.


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