The methodology has varied.
Although the results have been somewhat variable: the largest studies have only been of a couple of hundred women and the methodology has varied considerably in relation to sampling method and the extent to which the breasts were investigated.
There are also similarities between current findings and previous reports in diabetes (4, 5, 10), although direct comparison is difficult because methodology has varied, with different brain regions assessed and some samples including both type 1 and type 2 diabetic participants.
Study methodologies have varied widely in terms of nodule selection criteria, thyroid biochemical status, USE technology, acquisition technique, elastographic scoring system, and use of FNAC or surgical pathology as reference standards.
Although the specific research questions asked, and methodologies applied, have varied considerably, most of the above papers find that China's ethnic minorities have not fared well in comparison to the majority Han during China's transition to a market economy.
Compliance studies have varied in methodology with some focusing on unboiled tap water and others on boiled water, reducing comparability across studies and across notices.
Though recent estimates of the number of independent workers have varied with the methodology used, they generally peg the percentage of free agents in the U.S. workforce at 30% or more.
Furthermore, these studies have varied in their methodology and findings, so it remains unclear whether stimulation at any or all frequencies ≤ 20 Hz impairs movement and if so, whether effects are identical across this broad frequency band.
Studies of cocaine detection have varied in their results and methodology, but usually they measure the time it takes for metabolites to leave the body in hours, not days.
Ascribed values have varied dramatically depending on the methodology used, with managed honeybee annual values in the USA estimated at between US$1.6 billion and US$14.6 billion (Table S1).
