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';Classification of Students
From this Query, we have a general idea of how many students are in each category and it points out the noise in data.
From these Queries we see 286 Students in total.
- 201 International Students
- 67 Domestic students
- 3 null. Not classified.
SELECT Count(*) AS number_of_students
FROM studentsSELECT inter_dom, Count(*) AS number_of_students
FROM students
GROUP BY inter_domSummary Statistics
SELECT SUM(todep)AS Total_todep,
AVG(todep) AS avg_todep,
SUM(toas)AS Total_toas,
AVG(toas) AS avg_toas,
SUM(tosc)AS Total_tosc,
AVG(tosc) AS avg_tosc
FROM students SELECT
SUM(todep)AS Total_todep,
AVG(todep) AS avg_todep,
SUM(toas)AS Total_toas,
AVG(toas) AS avg_toas,
SUM(tosc)AS Total_tosc,
AVG(tosc) AS avg_tosc
FROM students
WHERE inter_dom = 'Inter'
Impact of Stay on International students with respect to their diagnostic tests
SELECT stay,
ROUND(AVG(todep),2) AS average_phq,
ROUND(AVG(tosc),2) AS average_scs,
ROUND(AVG(toas),2) AS average_as
FROM students
WHERE inter_dom = 'Inter'
GROUP BY stay
ORDER BY stay DESC;