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Preeti Manchanda/

Project: Analyzing Students' Mental Health in SQL

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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 NameDescription
inter_domTypes of students (international or domestic)
japanese_cateJapanese language proficiency
english_cateEnglish language proficiency
academicCurrent academic level (undergraduate or graduate)
ageCurrent age of student
stayCurrent length of stay in years
todepTotal score of depression (PHQ-9 test)
toscTotal score of social connectedness (SCS test)
toasTotal score of acculturative stress (ASISS test)
Unknown integration
DataFrameavailable as
students
variable
-- Run this code to save the CSV file as students
SELECT * 
FROM 'students.csv';
This query is taking long to finish...Consider adding a LIMIT clause or switching to Query mode to preview the result.
Unknown integration
DataFrameavailable as
df
variable
-- Start coding here...
SELECT COUNT(*) AS total_records, COUNT(inter_dom) AS count_inter_dom
FROM students;
This query is taking long to finish...Consider adding a LIMIT clause or switching to Query mode to preview the result.
Unknown integration
DataFrameavailable as
df1
variable
SELECT COUNT(*) AS total_records, COUNT(inter_dom) AS count_inter_dom 
FROM students 
WHERE inter_dom NOT LIKE 'Null'
GROUP BY inter_dom
ORDER BY inter_dom;
This query is taking long to finish...Consider adding a LIMIT clause or switching to Query mode to preview the result.
Unknown integration
DataFrameavailable as
df2
variable
SELECT ROUND(MIN(japanese),2) AS min_jap, 
ROUND(MAX(japanese), 2) AS max_jap,
ROUND(MIN(english),2) AS min_eng,
ROUND(MAX(english), 2) AS max_eng 
FROM students;
This query is taking long to finish...Consider adding a LIMIT clause or switching to Query mode to preview the result.
Unknown integration
DataFrameavailable as
df3
variable
SELECT ROUND(MIN(japanese),2) AS min_jap, ROUND(MAX(japanese), 2) AS max_jap, 
ROUND(MIN(english),2) AS min_eng, ROUND(MAX(english), 2) AS max_eng 
FROM students
WHERE inter_dom = 'Inter'
GROUP BY inter_dom;
This query is taking long to finish...Consider adding a LIMIT clause or switching to Query mode to preview the result.
Unknown integration
DataFrameavailable as
df
variable
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 AVG(stay) DESC;
This query is taking long to finish...Consider adding a LIMIT clause or switching to Query mode to preview the result.
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