Title goes here
BONNE
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 view the data in students
SELECT *
FROM students;-- 1. Distribuzione della salute mentale tra studenti internazionali e locali
SELECT inter_dom,
CASE
WHEN todep >= 10 THEN 'High Depression'
WHEN todep BETWEEN 5 AND 9 THEN 'Moderate Depression'
ELSE 'Low Depression'
END AS depression_level,
COUNT(*) AS count
FROM students
GROUP BY inter_dom, depression_level
ORDER BY inter_dom, depression_level;
-- 2. Correlazione tra stress acculturativo e depressione
SELECT toas AS acculturative_stress,
AVG(todep) AS avg_depression
FROM students
GROUP BY toas
ORDER BY toas;
-- 3. Impatto della connessione sociale sulla depressione
SELECT tosc AS social_connectedness,
AVG(todep) AS avg_depression
FROM students
GROUP BY tosc
ORDER BY tosc DESC;
-- 4. Impatto della durata del soggiorno sulla depressione
SELECT stay AS years_of_stay,
AVG(todep) AS avg_depression
FROM students
GROUP BY stay
ORDER BY stay;