Does going to university in a different country affect your mental health? A Japanese international university surveyed its students in 2018 and published a study the following year that was approved by several ethical and regulatory boards.
The study found that international students have a higher risk of mental health difficulties than the general population, and that social connectedness (belonging to a social group) and acculturative stress (stress associated with joining a new culture) are predictive of depression.
Explore the students data using PostgreSQL to find out if you would come to a similar conclusion for international students and see if the length of stay is a contributing factor.
Here is a data description of the columns you may find helpful.
| Field Name | Description |
|---|---|
inter_dom | Types of students (international or domestic) |
japanese_cate | Japanese language proficiency |
english_cate | English language proficiency |
academic | Current academic level (undergraduate or graduate) |
age | Current age of student |
stay | Current length of stay in years |
todep | Total score of depression (PHQ-9 test) |
tosc | Total score of social connectedness (SCS test) |
toas | Total score of acculturative stress (ASISS test) |
-- Run this code to save the CSV file as students
SELECT *
FROM 'students.csv';Exploratory data analysis
1 - Total record of students
SELECT COUNT(*) AS total_records
FROM students;2 - Count of students with an associated type (Domestic or International student)
SELECT COUNT(inter_dom) AS count_inter_dom
FROM students;3 - Count of each type of student (Domestic or International)
SELECT inter_dom, COUNT(inter_dom) AS count_inter_dom
FROM students
GROUP BY inter_dom;4 - Regional distribution of students
SELECT inter_dom AS student_type, region
FROM students
GROUP BY inter_dom, region
ORDER BY student_type, region;Statistical summary calculations
Statistical summary for all students for Total Score of Depression (todep)