secondary analysis

secondary analysis

any inquiry based on the reanalysis of previously analysed research data, e.g. publicly available data such as CENSUS data, or data available from data banks such as the ESRC Data Archive at Essex University. The advantages of using such data are their relative cheapness, since the data do not have to be collected, and the opportunity they can afford for longitudinal historical or cross-cultural analysis. The main disadvantage is that the researcher has far less control over the construction of variables and often has only limited knowledge of the manner and circumstances in which the data were collected. see also OFFICIAL STATISTICS.
References in periodicals archive ?
secondary analysis using the longitudinal datasets will allow a number of important research questions to be addressed.
UroGen Pharma announced findings from a secondary analysis from the pivotal Phase 3 OLYMPUS trial which showed that UGN-101 for instillation, an investigational mitomycin formulation, demonstrated a 59% complete response rate in a subset of patients with endoscopically unresectable low-grade upper tract urothelial cancer.
The finding comes from a secondary analysis of two randomized, controlled trials comparing Burch colposuspension, autologous fascial slings, retropubic midurethral polypropylene slings, and transobturator midurethral polypropylene slings.
In the instance of the CDC YRBSS data and in other ongoing studies, data can also be compared to previous years, as well as the year chosen for secondary analysis. Researchers use this source of information less often, possibly because of a lack of knowledge of it or the need to use unfamiliar data analysis techniques.
A secondary analysis of the ViaNase device subgroup "replicated findings in our original studies," which used the same atomizer, said Dr.
Secondary analysis of the E-FIT data alone showed no statistically significant differences between the trial arms observed.
Weidner, M.P.H., from the University of Washington in Seattle, and colleagues conducted a secondary analysis of data from 1,617 2016 National Family Medicine Graduate Survey respondents who provided outpatient continuity care to examine the correlation between family physician scope of practice and self-reported burnout.
Her 2007 study on bone health and vitamin D blood levels found, in a secondary analysis, that women who took vitamin D and calcium supplementation for four years had a 60 percent lower risk of all-type cancer than women who took placebos.
Then we do a secondary analysis, a qualitative assessment, to look at each particular situation to determine whether or not things should be changed.
Smoking abstinence for 7 years results in a 20% reduction in death from lung cancer--a benefit that is comparable to three rounds of annual screening with low-dose helical computed tomography (LDCT)--in asymptomatic individuals with at least a 30-pack-year smoking history, based on a secondary analysis of 50,263 participants in the National Lung Screening Trial (NLST).
However, there is no specific requirement for such community involvement in the secondary analysis of de-identified data, as is the case here.
Everett's new secondary analysis of BARI 2D was to learn if the hsTnT assay can be used to identify a subgroup of patients with type 2 diabetes and stable ischemic heart disease who might benefit from prompt coronary revascularization.