Environmental Factor and Onset of Spontaneous Pneumothorax

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

3090 participants

Study Classification

OBSERVATIONAL

Study Start Date

2013-05-31

Study Completion Date

2014-06-30

Brief Summary

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The study aims to evaluate the association between spontaneous pneumothorax onset and weather parameters.

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Detailed Description

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The aim of this study is to analyse the relation between onset of the PSP and exposure to environmental factors such as atmospheric pressure.

A case-crossover epidemiological study will be conducted in 14 French hospitals. SP recorded from 2009 to 2013 will be exhaustively included. Demographic and clinical characteristics will be collected. For each incident case of SP, the period of occurrence of the event (case period) will be compared to several other periods temporally distant from the case period (control periods prior to and after the event). Exposure will be assessed using meteorological stations localized in the vicinity of each patient's home. A potential threshold effect and/or time lag effect between exposure and admission for SP will be explored.

The results of this study will help to identify the meteorological factors associated with the occurrence of SP, and to deepen our knowledge of the pathophysiological mechanisms of SP especially the influence of meteorological factors on bleb rupture.

Conditions

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Spontaneous Pneumothorax

Study Design

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Observational Model Type

CASE_CROSSOVER

Study Time Perspective

RETROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* age over 18 years
* first episode of primary spontaneous pneumothorax

Exclusion Criteria

* Patients with traumatic
* Patients with secondary pneumothorax
* Patients with recurrent pneumothorax and patients with short-term readmissions (recurrence was defined as a new ED admission for the same diagnosis more than 14 days after the first admission).

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No