Track topics on Twitter Track topics that are important to you
To conduct a longitudinal investigation of early childhood lower respiratory illness (LRI) and patterns of lung growth using an existing electronic dataset generated by an 18-year study (1972-1990) of a population of 102 Black children followed from birth at the Frank Porter Graham Child Development Center.
The study should improve knowledge of the patterns of functional lung development during childhood and factors that influence both relative level and growth rate of lung function in Black children and should offer new understanding of the predictive value of spirometric tests of lung function performed at an early age.
The study used a previously existing database which was of unique value because it included comprehensive respiratory illness data collected on-site during the children's tenure in the Frank Porter Graham Child Development Center's daycare facility and spirometric data collected longitudinally from three to 13 years of age. Furthermore, the measurements were for children in a racial group for whom limited cross-sectional or longitudinal spirometric data were available.
The longitudinal analyses had two primary objectives. The first was to characterize patterns of functional lung development in Black children from three to 13 years of age and relate these patterns to potentially influential factors such as (a) wheezing and non-wheezing associated LRI experience during the infant (ages 0 to two) and preschool (ages two to five) years, (b) ages of occurrence of first and subsequent LRI episodes, and (c) respiratory syncytial virus etiology of LRI. Potentially confounding factors included prenatal and childhood exposure to environmental tobacco smoke and allergies. The second objective was to determine the degree to which spirometric parameters 'track' for individual children and for populations of children over the interval from three to 13 years of age. This objective required assessment of the degree to which spirometric evaluations during the preschool years were predictive of later lung function.
The statistical analyses for achieving these objectives used recently developed statistical methods based on the general linear mixed model. By design, these methods for longitudinal data handled unbalanced data with missing values, incorporated time-varying covariates, and provided more exactly the extent to which the level of lung function of individual children was maintained relative to that of other study children and determined the value of preschool spirometric measurements as predictors of levels of spirometric performance during later childhood and adolescence. These analyses utilized methods developed by Stewart, Pekow, Burchinal, and Helms in 1991 that were unique in that they were designed to handle incomplete, inconsistently-timed data as well as complete, balanced data.
Observational Model: Natural History
National Heart, Lung, and Blood Institute (NHLBI)
Published on BioPortfolio: 2014-07-23T21:56:35-0400
Interstitial lung diseases (ILD) are a group of diseases affecting the lung interstitium. The lung scarring that occurs in ILD is often irreversible with only mitigating therapy available ...
Disease related biomarkers have been established decades ago, e.g. blood glucose for diabetes diagnosis and management. Their discovery has grown dramatically during the past decade and th...
The study focuses on trefoil family factor (TFF) peptides in sputum in lung diseases. The investigators hypothesize that TFF peptides are upregulated in lung diseases characterized by mucu...
The cause of most interstitial lung diseases (ILDs) is still unknown. Further research, for example to determine predisposing genetic factors, is therefore needed. A database with relevant...
Recognition of disease specific clusters of volatile organic compounds in patients with different lung diseases, using breath analysis with ion mobility spectrometry. Lung diseases of inte...
Accurate diagnosis is essential for successful management of diffuse lung disease (DLD). Histopathology may sometimes be necessary. Surgical lung biopsy, the gold standard, carries a risk of morbidity...
IL-8 dependent inflammation is a hallmark of host lung innate immunity to bacterial pathogens, yet in many human lung diseases including COPD, bronchiectasis, and pulmonary fibrosis, there are progres...
Coal Mine Dust Lung Disease (CMDLD) encompasses a spectrum of lung diseases caused by prolonged exposure to coal mine dust. This review presents high-resolution computed tomography (HRCT) images from ...
Transbronchial cryobiopsy (cTBB) may offer an alternative to surgical lung biopsy (SLB) for histopathological diagnosis of interstitial lung diseases (ILDs). However, real-life experience is limited, ...
A diverse group of lung diseases that affect the lung parenchyma. They are characterized by an initial inflammation of PULMONARY ALVEOLI that extends to the interstitium and beyond leading to diffuse PULMONARY FIBROSIS. Interstitial lung diseases are classified by their etiology (known or unknown causes), and radiological-pathological features.
Pathological processes involving any part of the LUNG.
Any disorder marked by obstruction of conducting airways of the lung. AIRWAY OBSTRUCTION may be acute, chronic, intermittent, or persistent.
A condition characterized by infiltration of the lung with EOSINOPHILS due to inflammation or other disease processes. Major eosinophilic lung diseases are the eosinophilic pneumonias caused by infections, allergens, or toxic agents.
A rapidly growing non-tuberculous environmental mycobacterium causing OPPORTUNISTIC INFECTION that infects the skin and subcutaneous tissues. It is associated with HEALTH CARE ASSOCIATED INFECTION and causes serious lung infections in persons with various chronic lung diseases.
Pediatrics is the general medicine of childhood. Because of the developmental processes (psychological and physical) of childhood, the involvement of parents, and the social management of conditions at home and at school, pediatrics is a specialty. With ...
Asthma COPD Cystic Fibrosis Pneumonia Pulmonary Medicine Respiratory Respiratory tract infections (RTIs) are any infection of the sinuses, throat, airways or lungs. They're usually caused by viruses, but they can also ...
Pulmonary relating to or associated with the lungs eg Asthma, chronic bronchitis, emphysema, COPD, Cystic Fibrosis, Influenza, Lung Cancer, Pneumonia, Pulmonary Arterial Hypertension, Sleep Disorders etc Follow and track Lung Cancer News ...