Michele Lee, JC DeNiro and Associates (212 518-8693; www.jcdeniro.com MAINTENANCE: $653 PROS: The double-height exposure gives plenty of light both upstairs and down.
The samples were taken from the same part of a branch and the same insertion height and exposure: The height of two to three metres at the western exposure of trees was chosen and only fully developed leaves of about the same age status were selected.
Wind estimates vary with height and exposure.
As an approximation, these coefficients are generally taken to be independent of roof height and exposure.
Other inputs to the neural network model included tree DBH (diameter at breast height), environmental (exposure, soil wetness) and topographic (aspect, altitude) variables.
For each patient, data recorded included diagnostic protocol, patient demographic data (sex, age, weight, and height), CT exposure parameters (tube voltage (kV), effective tube current-time product (mAs), rotation time, pitch, slice collimation, CTDIvol, and DLP), administered radiopharmaceutical and its activity, and PET scan parameters (number of bed positions).
Unlike many previous association studies, this investigation was well-controlled for age, sex, height and exposure to smoke, and used a very large number of patients.
Although helpful, measurements obtained from settled dust samples, which are often enriched with larger particles, are not entirely representative of the particle types or size distribution of aerosolized, potentially respirable dust during the height of exposure.
There were no clinical or statistically significant differences in sex, age, height, weight, exposure to cigarette smoking or indoor wood smoke inhalation, chronic lung disease or past clinical history of important cardiovascular co-morbidity.
The mean z-score of height-for-age in childhood and adolescence according to demographic and socioeconomic characteristics, length and weight at birth, breastfeeding, maternal height, and exposure to passive smoking was compared using the Student's t-test and analysis of variance (ANOVA).
The final study population included participants with blood samples available for genetic testing and complete baseline and follow-up data on spirometry, smoking history, weight, weight change, height, PM10 exposure, and residential history, as well as statistical model covariates (n = 4,659) (Downs et al. 2007).
