Introduction
This post is for the week 3 assignment of the Coursera course Data Management and Visualization by Wesleyan University.
Instructions for this assignment:
STEP 1: Create graphs of your variables one at a time (univariate graphs).
STEP 2: Create a graph showing the association between your explanatory and response variables (bivariate graph).
Variables
The explanatory (independent) variable:
- INTERVALGROUP (categorical variable, 3 categories)
- NUMSH (categorical variable, 2 categories).
The response (dependent) variable:
- S4AQ4A16 (categorical variable, 2 categories)
What do these variables mean?
INTERVALGROUP=”Three Groups with Different Time Interval Between First Episode & First Sought Help”
NUMSH=”Sought Help Once, Twice or More”S4AQ4A16=”Attempted Suicide”
More info: Research Project (3)
CODE
Based on the codes from the previous week, I added these codes to display the graphs:
1.Recode:
2.Create graphs:
Univariate graphs
The univariate graphs of three variables:
The first graph is unimodal, with its highest peak at the lowest category of 0 time interval. It seems to be skewed to the right.
The second graph is unimodal, with a higher percent of people who sought help for only one time (57%) compared to those who sought help for twice or more times (43%).
The third graph is unimodal, with a higher pencent of people who didn’t attempt suicide (88%) compared to those who did (12%).
*Note: Responses were from those who had major depression at the time of interview.
Bivariate graphs
History of suicide attempt BY time interval groups & number of help-seeking times:
Recoded Values for the response variable:
0=no, didn’t attempt suicide; 1= yes, attempted suicide
Therefore, the higher the y value is, the greater percent of people in that category attempted suicide.
Conclusion:
Among people with major depression, suicide attempts seemed to have no association with time interval between age of onset of major depression and age of help-seeking, but those who sought help for two or more times appeared to have a higher risk of attempting suicide compared to those who sought help for only once.
