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The goal of this observational study is to evaluate the impact of primary air pollutants and weather parameters on emergency department (ED) visits in the metropolitan area of Florence.
This is a retrospective, single-center, observational cohort study aimed at investigate the impact of primary air pollutant concentrations and weather parameters on emergency department (ED) visits in the metropolitan area of Florence.
Anonymous data for each individual ED visit is retrieved from the hospital medical record. The daily concentrations of PM2.5, PM10, NO2, SO2 and O3 and the levels of atmospheric pressure, humidity and temperature are recorded by stations of the dedicated local agencies. The relationship between ED daily visits and pollutant concentrations or weather parameters are investigated.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Study cohort |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| No intervention administered | Other | NA (not applicable) |
|
| Measure | Description | Time Frame |
|---|---|---|
| number of daily emergency department visits | Total number of emergency department visits on a given day | through study completion, 1 year |
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| Measure | Description | Time Frame |
|---|---|---|
| number of patients with Levels of Urgency (I-V) of emergency department visits | Levels of urgency of emergency department visits defined according to the Canadian triage system. With I emergency and V non-urgent visit | through study completion, 1 year |
| Number of patients with the most frequent primary complaints of emergency department visits |
Inclusion Criteria:
Exclusion Criteria:
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The study population consists of consecutive patients presenting to the Emergency Departments (ED) of the participating hospital.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Peiman Nazerian | Contact | +39 3396122448 | nazerianp@aou-careggi.toscana.it |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| SOD Medicina e Chirurgia d'Urgenza ed Accettazione, Azienda Ospedaliera-Universitaria Careggi | Recruiting | Florence | 50134 | Italy |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 40537710 | Derived | Gnerucci A, Rossetto A, Faraoni P, Ranaldi F, Cavallaro G, Tonietti B, Santosuosso U, Bonaccorsi L, Nazerian P; SIMEU Study Group. Particulate matter concentration is associated with increased utilization of the emergency department: a single-centre time-series analysis. Intern Emerg Med. 2026 Apr;21(3):1097-1107. doi: 10.1007/s11739-025-04013-2. Epub 2025 Jun 19. |
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| through study completion, 1 year |
| Number of patients hospitalised | Admission to a hospital ward | through study completion, 1 year |
| In-hospital mortality | Death occurring either in the emergency department or following admission to ward | through study completion, 1 year |
| ID | Term |
|---|---|
| D004630 | Emergencies |
| ID | Term |
|---|---|
| D020969 | Disease Attributes |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
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