- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT00005361
Determinants of Respiratory Health in Young Adults
Panoramica dello studio
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BACKGROUND:
While the natural history of human lung function growth and decline has been studied intensively over the past 30 years, relatively few data have been collected during the period in which peak volumetric function is achieved, i.e., around the age of 20. As a result, very little is known about the factors, both demographic and environmental, which influence maximal attained lung function.
DESIGN NARRATIVE:
The longitudinal study collected information on the history of respiratory illness, residential history, parental smoking, socio-economic status and home characteristics via an initial questionnaire administered to cadets enrolling at West Point. A sequence of four annual measurements of lung function (by spirometry), and prior-year respiratory health status and activity patterns was obtained in the spring of each year. Pollution exposures were estimated by matching residential histories with historical pollution data stored at the Environmental Protection Agency. Data on meteorological variables (temperature, relative humidity, wind speed) and altitude were obtained for each residential location. The four annual lung function measurements provided precise estimates of individual mean levels of FVC, FEV1, FEF25-75, PEFR, and flow rates at 50 percent and 75 percent of expired FVC. Subject-specific lung function level was analyzed in relation to history of parental smoking and prior exposure to air pollution using analysis of variance methods, controlling for potential confounding variables. In addition to testing these hypotheses regarding the respiratory effects of passive smoking and air pollution exposure, the study also explored the effects of these exposures on the change in lung function between the ages of 18 and 22 and on respiratory illness and symptom experience while at West Point. Finally, the study established a cohort which could be followed in future years.
The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.
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Altri numeri di identificazione dello studio
- 4248
- R01HL048619 (Sovvenzione/contratto NIH degli Stati Uniti)
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
Prove cliniche su Malattie polmonari
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National Cancer Institute (NCI)ReclutamentoKita-kyushu Lung Cancer Antigen 1, umanoStati Uniti