# Environmental Factor and Onset of Spontaneous Pneumothorax

> **NCT03557320** · — · COMPLETED · sponsor: **Centre Hospitalier Universitaire de Besancon** · enrollment: 3090 (actual)

## Conditions studied

- Spontaneous Pneumothorax

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT03557320
- **Lead sponsor:** Centre Hospitalier Universitaire de Besancon
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2013-05-31
- **Primary completion:** 2014-06-30
- **Final completion:** 2014-06-30
- **Target enrollment:** 3090 (ACTUAL)
- **Last updated:** 2020-01-27

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03557320

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03557320, "Environmental Factor and Onset of Spontaneous Pneumothorax". Retrieved via AI Analytics 2026-07-11 from https://api.ai-analytics.org/clinical/NCT03557320. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*