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Early Risk Predictors For Chronic Pulmonary Disease

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ClinicalTrials.gov Identifier: NCT00005281
Recruitment Status : Completed
First Posted : May 26, 2000
Last Update Posted : March 16, 2016
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To continue to evaluate risk factors heretofore determined to be important predictors of chronic respiratory symptoms, diagnosis of asthma, and alterations in expected levels of lung function in children and adolescents in a new population of young adult women.

Condition or disease
Asthma Lung Diseases, Obstructive Chronic Obstructive Pulmonary Disease

Detailed Description:


This longitudinal study was initiated in 1975 when a stratified random sample of children, ages 5-9 years and living in the East Boston area of the City of Boston, was selected. Annual lung function tests were performed on the children and their families and questionnaires administered on respiratory illness history, smoking history, disability from cardiac disease, age of menarche in female children and demographic data such as type of heating, type of fuel for cooking, types of air purifying devices, and area of residence. A subset of the cohort had repeated measures of eucapneic hyperventilation with cold air. The cohort was also studied with helium-oxygen protocol. Analysis focused on validation of existing models, including the autoregressive model, for lung growth in children and adolescents and the decline in growth in adults.


The longitudinal study was renewed in 1995. The overall aim of this continuing investigation was to evaluate risk factors heretofore determined to be important predictors of chronic respiratory symptoms, diagnosis of asthma, and alterations in expected levels of lung function in children and adolescents in a new population of young adult women. Within the existing population the investigators had already obtained repeated observations of airways responsiveness and measures of morbidity on a group of young adults aged up to 35. These data, however, were limited in total numbers to a few hundred. They expanded the observations to 883 women aged 17-22 specifically to assess risk factors that affected maximum attained level of lung function. Data on the entire cohort were collected cross-sectionally and included standardized questionnaires on respiratory symptoms, diseases, and exposures. Pulmonary function, height, and immediate medication history were subsequently obtained on the entire cohort, along with blood specimens that were analyzed immediately for WBC and total eosinophil counts and stored for subsequent analysis of lgE and cytokine profiles. To assess the impact of a history of asthma (wheeze), all subjects reporting asthma with the use of medication in the last month, a one-third sample of women with symptoms with no medication use, and an equal number of asymptomatic age and smoking matched women had spirometry repeated before and after bronchodilator use. The results of these investigations provided insights into risk factors affecting maximum obtained level of pulmonary function in women. Since level of function is a critical determinant of risk of developing chronic obstructive lung disease, the determination of the interaction of factors other than cigarette smoking led to better strategies for helping women to stop smoking, which would be a major step in reducing morbidity and mortality from chronic respiratory disease.

The study was formerly supported by R01HL22528.

The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.

Study Type : Observational
Study Start Date : September 1977
Study Completion Date : November 1998

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 100 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
No eligibility criteria


ClinicalTrials.gov Identifier: NCT00005281     History of Changes
Other Study ID Numbers: 2002
R01HL036002 ( U.S. NIH Grant/Contract )
First Posted: May 26, 2000    Key Record Dates
Last Update Posted: March 16, 2016
Last Verified: April 2001

Additional relevant MeSH terms:
Lung Diseases
Lung Diseases, Obstructive
Pulmonary Disease, Chronic Obstructive
Respiratory Tract Diseases