Analyzing Students' Mental Health using SQL

Overview

Explored survey data from a study on international university students to investigate whether studying abroad affects mental health — and whether length of stay amplifies that effect.

What I did

• —Queried and filtered a PostgreSQL database of student records using WHERE, GROUP BY, and ORDER BY to isolate international students from domestic ones.
• —Computed group-level averages for three validated mental health scores — PHQ-9 (depression), SCS (social connectedness), and ASISS (acculturative stress) — segmented by length of stay.
• —Found patterns consistent with the original published study: longer stays correlated with shifts in depression and stress scores among international students.