The latter may amplify or modify the response to the former and are eminently amenable to modulation by changes in practice.
The data were possibly biased by changes in practice occurring during this time, such as changes in triage and care recently reported in cohorts of ICU older patients [ 3, 4].
We have implicitly assumed that the longitudinal changes in the Hb distribution curve at the facility-level during the study time period were primarily influenced by changes in practice patterns concerning Hb measurement and ESA dose adjustment administration frequencies.
Finally, because the meta-analysis of Nissen and Wolski received considerable media attention and influenced thiazolidinedione prescribing trends, 30 we repeated our analyses but terminated follow-up one year earlier (31 March 2007) to reduce any potential contamination of our findings by changes in practice resulting from publication of the meta-analysis.
Because the control patients were recruited only a few months before the first treated patients, and exploratory analyses did not show signs of temporal trends, we have no reason to believe that the results were biased by changes in practice over time.
Consequently, reducing fine sediment delivery to rivers, such as by changes in agricultural practices, is more sustainable for managing excessive river sedimentation.
A recent management trend for drained peatlands is the control of greenhouse gases (GHG) by changes in agricultural practices, peatland restoration or paludiculture.
The objective of this study was to determine the extent to which the increased prevalence of autism in California has been driven by changes in diagnostic practices, diagnostic substitution and diagnostic accretion.
The proposal also suggests that revising the rules is called for by changes in market practices and trading technologies, which have expanded opportunities for outside shareholders to accumulate large stakes quickly before being required to make a public disclosure.
However, administrative data may be affected by changes in coding practices that distort incidence and mortality estimates.
