Journal article
Random left censoring: a second look at bone lead concentration measurements
Abstract
Bone lead concentrations measured in vivo by x-ray fluorescence (XRF) are subjected to left censoring due to limited precision of the technique at very low concentrations. In the analysis of bone lead measurements, inverse variance weighting (IVW) of measurements is commonly used to estimate the mean of a data set and its standard error. Student's t-test is used to compare the IVW means of two sets, testing the hypothesis that the two sets are …
Authors
Popovic M; Nie H; Chettle DR; McNeill FE
Journal
Physics in Medicine and Biology, Vol. 52, No. 17, pp. 5369–5378
Publisher
IOP Publishing
Publication Date
September 7, 2007
DOI
10.1088/0031-9155/52/17/018
ISSN
0031-9155