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';-- SELECT
-- inter_dom as count_inter_dom,
-- MIN(todep) AS min_phq,
-- MAX(todep) AS max_phq,
-- ROUND(avg(todep),2) avg_phq,
-- MIN(tosc) AS min_scs,
-- MAX(tosc) AS max_scs,
-- ROUND(avg(tosc),2) avg_scs,
-- MIN(toas) AS min_as,
-- MAX(toas) AS max_as,
-- ROUND(avg(toas),2) as avg_as
-- FROM students
-- WHERE inter_dom <> 'null'
-- GROUP BY inter_dom
-- ;
-- SELECT AGE,
-- ROUND(avg(todep),2) as avg_phq,
-- ROUND(avg(tosc),2) as avg_scs,
-- ROUND(avg(toas),2) as avg_as
-- FROM students
-- WHERE inter_dom = 'Inter'
-- GROUP BY Age
-- ORDER BY Age;
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;