Analyzing Student's Mental Health - Guided

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. Explore the students data using PostgreSQL to find out if this is true and see if the length of stay is a contributing factor.

Here is a data description of the fields you may find helpful. The full dataset is in one table with 50 fields and, according to the survey, 268 records. Each row is a student.

Field Name	Description
inter_dom	Types of students
japanese_cate	Japanese language proficiency
english_cate	English language proficiency
academic	Current academic level
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)

Your task will be to do the following exploratory analysis:

Count the number of all records, and all records per student type
Filter the data to see how it differs between the student types
Find the summary statistics of the diagnostic tests for all students
Summarize the data for international students
See if length of stay impacts the test scores

DataFrameas

df

variable

-- Start coding here...
SELECT *
FROM students;

DataFrameas

df

variable

SELECT COUNT(inter_dom) total_records,
    COUNT(DISTINCT inter_dom) as count_inter_dom
FROM students;

SELECT

DataFrameas

df

variable

SELECT *
FROM sutdents
WHERE inter_dom = Inter

DataFrameas

df

variable

Run cancelled

SELECT *
FROM sutdents
WHERE inter_dom = Dom

DataFrameas

df

variable

select *
from students
WHERE inter_dom =''

DataFrameas

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 stay DESC