Practical 1: Data preparation

This is the first practical lesson where we learn how to prepare data before analysis.

Objectives

• Read data from differing formats
• Editing variable names
• Labelling variables
• Editing value labels
• Setting variable types
• Arrange variable levels appropriately
• Deriving new variables
• Transforming variables

Practical

To do this we will begin with the schisto data. Please download and save it on your computer if you have not done so already.

• Create a folder on your computer
• Save the data in the folder.
• Import the data into Jamovi
• Make sure all variable types reflect the type of variable collected
• Appropriately labels all categorical or ordinal variables
• Edit the names of the variables to the appropriate names
• Create a variable BMI from the weight and height
• Create an ordinal variable from the HB as: Severe = <8g/dl, Moderate = 8g/dl to <10g/dl and Mlld = 10g/dl to <12g/dl and >=12g/dl = Normal
• Save the data as schisto.omv

To do

• Download the blood data
• Read it into Jamovi
• Make sure all variable types reflect the type of variable collected
• Appropriately labels all categorical or ordinal variables
• Edit the names of the variables to the appropriate names
• Create a variable BMI from the weight and height
• Create an ordinal variable from the HB as: Severe = <8g/dl, Moderate = 8g/dl to <10g/dl and Mlld = 10g/dl to <12g/dl and >=12g/dl = Normal
• Save data as blood.omv