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Students Mental Health

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.

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DataFrameas
students
variable
-- Run this code to view the data in students
SELECT * 
FROM students;
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)

Average Depression

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DataFrameas
average_dp
variable
SELECT inter_dom, AVG(todep) AS avg_depression
FROM students
GROUP BY inter_dom;

Is Social Connectedness or Acculturative Stress Related?

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DataFrameas
SC_and_AS_connect
variable
SELECT inter_dom, AVG(todep) AS avg_dep, AVG(tosc) AS av_sc, AVG(toas) AS av_as
FROM students
WHERE inter_dom = 'Inter'
GROUP BY inter_dom;
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DataFrameas
Stay_to_dp
variable
SELECT stay, AVG(todep) AS avg_dep
FROM students 
WHERE inter_dom = 'Inter'
GROUP BY stay
ORDER BY stay DESC;