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Tools for Healthcare Research
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Tools for Healthcare Research

MediumSQL · PostgreSQL

Problem

Which statistical software or programming languages (e.g., R, SAS, SQL) are you most proficient in, and how have you applied them to healthcare research?

To demonstrate SQL proficiency, use the patients and encounters tables to identify patients with at least two emergency department encounters during 2024.

Output

  1. One row per qualifying patient with patient_id, patient_name, ed_encounter_count, and latest_ed_encounter
  2. Include only patients with at least two qualifying encounters
  3. Order by encounter count descending, then latest encounter descending, then patient ID ascending

Schema

patients
ColumnTypeDescription
patient_idPKINTUnique patient identifier
patient_nameVARCHAR(100)Patient name
birth_dateDATEPatient date of birth
sexVARCHAR(20)Recorded patient sex
encounters
ColumnTypeDescription
encounter_idPKINTUnique encounter identifier
patient_idINTPatient associated with the encounter
encounter_dateDATEDate of the encounter
encounter_typeVARCHAR(30)Clinical encounter type
Tablespatientsencounters
Interviewer

Your question is Tools for Healthcare Research. Start with the requirements and the two tables in the Question tab.

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