To identify all primary research studies that evaluated levels of candidate biomarker expression as a prognostic factor among individuals with EC, we searched the PubMed medical literature database up to April 11 , 2012 without language restrictions, using a strategy developed with an expert librarian based on terms for esophageal carcinoma, prognostic studies [ 10] and biomarkers.
Nonetheless "Orchestra of Exiles" aspires to a level of primary research that other historical documentaries could take a page from.
Bias enters into every stage of the scientific process, and the cumulative effect at the level of primary research, knowledge synthesis, and science reporting, can produce headlines that have a convoluted relationship to the truth.
You can't really quantify the economic impact of a year's worth of research, ideas and innovation with any credibility unless you conduct primary research to a highly granular level across different fields and specific projects – almost impossible and entirely impractical.
Studies were included if written in English, peer-reviewed, had primary research data, and measured PA levels of awID.
In addition, the study considered the frequency and relationship of score use in articles published across a range of orthopedic journals, and the influence of study design, level of evidence, primary research topic, and study country of origin on the scoring system used.
A systematic review "is a high-level overview of primary research on a particular research question that tries to identify, select, synthesize and appraise all high quality research evidence relevant to that question in order to answer it," 1 and the well conducted ones tend to be carried out by teams of experts.
The USAP is entering "caretaker status," which staffs the program at a minimal level at its three primary research stations, ships and other associated facilities.
On level 1 we separated primary research studies and systematic reviews, and for both of these categories whether articles already reported data or were protocols.
By analyzing the settings of the primary research, a set of five moderators was identified: grade level, instrumentation, treatment duration, content domain, and type of learning setting.
