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';-- Total Number of Record
SELECT COUNT(*) AS total_records
FROM students-- Total Number of Students
SELECT COUNT(inter_dom) AS count_inter_dom
FROM students-- International Students
SELECT *
FROM students
WHERE inter_dom = 'Inter'-- Domestic Students
SELECT *
FROM students
WHERE inter_dom = 'Dom'-- Students with unknown status
SELECT *
FROM students
WHERE inter_dom IS NULL -- Minimum depression score
SELECT MIN(todep) AS min_phq
FROM students-- Maximum depression score
SELECT MAX(todep) AS max_phq
FROM students-- Average depression score
SELECT AVG(todep) AS avg_phq
FROM students-- Minimum social connectedness score
SELECT MIN(tosc) min_scs
FROM students-- Maximum social connectedness score
SELECT MAX(tosc) AS max_scs
FROM students-- Average social connectedness score
SELECT AVG(tosc) AS avg_scs
FROM students